The doctor told me I had 72 hours left, unless I got access to the newest experimental treatment. However, there was only one slot available, and my husband Bowen Liddell gave it to my sister Yvonne Lawson instead.

"Her kidney failure is more critical," he said.

I nodded and swallowed the white pills that would only speed up my death. In the time I had left, I got a lot done.

The lawyer's hand trembled as he passed me the documents. "Are you sure you want to transfer the two billion dollars in shares?"

I replied, "Yes. Give them to Yvonne."

My daughter, Candice Liddell, was giggling in Yvonne's arms. "Mommy Yvonne bought me a new dress!"

I said, "It looks beautiful. Make sure you always listen to Mommy Yvonne, okay?"

The art gallery I built from the ground up now had Yvonne's name on the sign.

"You're too kind, Kathy," she said, crying.

I told her, "You'll run it even better than I ever did."

I even signed all my parents' trust fund away.

That was when Bowen finally gave me his first genuine smile in years. "Kathleen, you've changed. You're not so aggressive anymore... You're beautiful like this."

Indeed. This dying version of me finally became the 'perfect Kathleen Sullivan' in their eyes—obedient, generous, and no longer argumentative.

The 72-hour countdown had already begun, and I couldn't help but wonder what they would remember when my heart stopped for good.

The good wife who 'finally learned to let go', or the woman who completed her revenge by dying?

My husband, Bowen Liddell, said I was not gentle enough. My parents called me selfish, and my daughter said she loved Yvonne Lawson more. So, I decided to spend my last 72 hours giving everything I had—my life, my legacy—to this perfect woman.

The doctor's words echoed in my ears. "It's late-stage cancer. If you don't start the special treatment immediately, you have, at most, three days."

I leaned back in the hospital bed and stared out the window. I had poured myself into this marriage for seven years as Bowen's wife until she appeared.

The door opened, and Bowen walked in. His expression was already tinged with impatience as he asked, "You okay?"

"I'm fine," I answered softly.

He frowned. "The doctor said you need that experimental treatment, but—"

"But Yvonne needs it more, right?" I finished for him, curling my lips into a bitter smile.

Yvonne was the pitiful girl I convinced my parents to adopt from the orphanage when I was 12. I treated her like a real sister, never imagining she would take everything from me one day.

"You have to understand," Bowen said, his tone softening. "Yve's condition is worse. Her kidneys are close to failing, and you...you still look fine."

Yeah, I looked okay. No one knew I had been secretly taking fatal doses of painkillers just to numb the agony that the cancer was causing.

I replied calmly, "I understand. Let her have the treatment."

Relief washed over Bowen's face. "I knew you'd understand. You've changed a lot these past few years—you're not so stubborn anymore."

Stubborn? I laughed bitterly to myself. Ever since Yvonne came into our lives, every time I stood my ground, it was labeled as jealousy and pettiness.

That evening, I forced myself to go home.

"Mommy!" My daughter, Candice Liddell, saw me and immediately hid behind Yvonne.

"Hey, Candice..." I managed a smile.

"Kathleen, you're back," Yvonne said, wearing the luxury suit I had given her. She was sitting in what used to be my spot.

"Yve, I have something for you."

I walked to the study and returned with a folder. "These are the transfer papers for my art gallery. I want to give it to you."

"What?" Yvonne stood up in shock. "Kathleen, that's your beloved gallery!"

Yes, it was the gallery I had built from the ground up—my life's work. However, at that point, none of that mattered anymore.

I smiled. "You're better suited to run it than I am. Consider it an early wedding gift."

Yvonne's expression flickered, but she quickly resumed her innocent look. "Kathleen, what are you talking about?"

I stepped closer and whispered, "I know everything. It's okay—I wish you both well."

Bowen walked in just then, looking tense when he saw us together. "What are you two talking about?"

"Kathleen wants to give me the gallery," Yvonne said with tears in her eyes. "She's being so kind."

Bowen looked at me, complex emotions flashing in his eyes. "Kathleen Sullivan, you—"

"I'm tired," I said, interrupting him. "I'm going upstairs to rest. Candice, be good and listen to Aunt Yvonne."

"Okay," Candice replied flatly. Then, she turned to Yvonne. "Mommy Yvonne, let's keep playing our game."

My heart clenched when I heard her addressing her as Mommy Yvonne.

Back in the bedroom, I leaned against the door and finally collapsed. The cancer cells were devouring my life, and those drugs were accelerating the process.

Later, I began sorting through my closet. Those expensive dresses, jewelry, and handbags would all belong to Yvonne soon.

"You have 72 hours left," I whispered to my pale reflection in the mirror. "Kathleen, for these last three days, let them remember a perfect version of you."

I knew the truth would come out eventually.

Everything after my death had already been arranged, and the evidence I gathered would expose who Yvonne really was.

I knew they would regret it all, but I would already be gone by then.

That would be my revenge.

The next morning, I woke up in excruciating pain. The cancer cells burned through my body like flames, but the painkillers helped me maintain a calm facade. I forced myself out of bed—there was so much left to do.

Walking down the stairs, I heard Candice's laughter coming from the living room. She was sitting on Yvonne's lap, reading a picture book together.

"Mommy Yvonne, this princess is so pretty!" Candice pointed excitedly at the page.

"She is. Just like you, Candice," Yvonne replied gently, kissing her forehead.

When Candice saw me, she only glanced up briefly before returning to her book as if I were just an insignificant stranger.

"Good morning, Candice," I said as I slowly walked over.

"Morning," she replied dismissively, then tugged on Yvonne's hand. "Mommy Yvonne, can we go to the garden and look for butterflies?"

"Just a second, sweetheart," Yvonne said, pretending to look concerned as she glanced at me. "Your mommy might want to talk to you."

"I don't want to hear it. Mommy's always busy and never plays with me." Candice pouted.

Her words sliced through me like a knife. She was right—I had spent less time with her over the years because of work, while Yvonne always had time for Candice.

"It's okay. Go ahead and have fun," I replied with a strained smile.

As I watched them walk off hand in hand, I had to grip the wall just to stay upright. It was not just the physical pain anymore, but my heart was breaking, too.

In the dining room, Bowen was watching the financial news. When he saw me come in, he only looked up briefly. He frowned and said, "You look awful. Stop pushing yourself so hard."

I took a seat and said, "I'm fine. Anyway, I want to talk to you about something."

"What is it?" He put down his iPad impatiently.

I pulled out the documents I had prepared. "It's about our prenup. I want to make some changes."

Bowen took the papers and looked at them. "Kathleen, you want to give up all your property rights?"

I replied calmly, "Yes. If something happens to me... If there's an accident, I want all the assets to go to you, including the trust fund my parents left me."

Then, I continued to say, "I also want to give my art collection to Yve."

"What?" Bowen stared at me in shock. "Even your mother's original Manet?"

"She loves art and will better manage it than I can. Consider it an early wedding gift," I explained.

The air instantly grew thick with tension, and Bowen looked at me coldly. "Kathleen, what exactly are you trying to pull?"

I remained calm. "I'm not trying to pull anything. I'm just tired and ready to let go."

His expression changed, and he muttered, "You know, don't you?"

"The hotel surveillance, credit card bills, and Candice calling her Mommy Yvonne?" I smiled bitterly. "Bowen, do you really think I don't know anything?"

He fell silent.

"I don't blame you," I said. "It's my fault. I was always arguing with you about company matters, always so controlling. Yvonne is gentle and considerate, and she never contradicts you. She's better suited for you."

"Kathleen!"

I stood up. "This afternoon, I'll go to the office to announce that I'm transferring my shares to Yvonne. I'll make her an official member of the board."

"You've lost your mind!" Bowen shot up from his chair. "That's two billion dollars worth of shares!"

"I haven't lost my mind," I said, looking out at Yvonne and Candice in the garden. "I just want all of you to be happy."

At the company's headquarters, news spread quickly that I had brought Yvonne to the board meeting and announced that I was transferring my shares to her.

"Kathleen, are you serious?" Harrison Diaz, one of the senior board members, asked as he pulled me aside.

"I'm completely serious," I replied as I signed my name on the documents. "From today onward, Yvonne will represent me in all company decisions."

Yvonne trembled with excitement, though she did her best to look muted. "Kathleen, I—I don't know what to say!"

I handed her the documents and said, "You don't have to say anything. Just do a good job."

On the way home, her mask finally slipped. She asked, "Kathleen, why are you doing this?"

"Because this is what you wanted, isn't it?" I leaned my head against the car window. "My husband, my daughter, my fortune... Yvonne, you've won."

"Kathleen, I—"

"Promise me one thing," I said, cutting her off. "At least keep pretending for Candice. She's still a child, and she needs a complete family."

That evening, I sat alone in the study, sorting my things. Just then, Annie Stewart, my attending nurse, came in.

Her eyes welled up with tears when she saw me and mumbled, "Mrs. Liddell..."

"Burn all of it." I pointed to the pile of documents on the desk—everything I had gathered on Yvonne's crimes.

"But Mrs. Liddell, with this evidence, we could—"

I wiped my tears. "Candice needs a mother... Even if that person isn't me."

On the morning of my final day, I could barely get out of bed. The cancer had spread throughout my body, and every breath was agonizing. I looked at myself in the mirror—pale, gaunt, with sunken eyes.

"Twenty-four hours left," I told myself.

Today was Bowen and Yvonne's engagement party. Yes, they could not wait any longer. I forced myself downstairs, where the living room had been completely redecorated.

Yvonne wore a champagne-colored gown and directed the staff as they arranged flowers.

"Kathleen."

I turned around to see my parents walking in. They were dressed in their finest clothes, and my mom even wore my grandmother's sapphire necklace, which I was supposed to inherit.

"Kathleen, well done. You've finally come to your senses! You've been competing with Yve all these years, and your dad and I have been so worried." My mom beamed with a kind smile.

My dad nodded. "That's right. Yve has been sweet and obedient since she was little, unlike you, always so headstrong. Now you've finally learned how to be a big sister."

I watched their joyful expressions as my heart broke into pieces. No matter how accomplished I was, I could never measure up to sweet Yvonne in their eyes.

I turned and walked away, unable to listen anymore.

The party started at 7 p.m., packed with guests—all the elite of New Aeravale society. They were all surprised to see me there. After all, attending one's husband's engagement party to another woman required quite a bit of grace.

"Kathleen, you actually came." Bowen approached me, his handsome face showing complex emotions.

"I told you I would." I raised a glass of champagne. "Congratulations."

"Kathleen..." He seemed like he wanted to say something, but Yvonne walked over with her arm linked through his.

"Kathleen, thank you for coming." She smiled sweetly, the diamond ring on her left hand sparkling—it was the Liddell family heirloom, the one that was once mine.

Bowen raised his glass. "Ladies and gentlemen, thank you all for coming to celebrate Yve's and my engagement party. I especially want to thank...Kathleen, for her grace and blessing.

Applause thundered through the room. I raised my glass and toasted from afar.

"I also want to thank my sister, Kathleen," Yvonne said with tears in her eyes. "She gave me everything—family, love, and now...even the chance to have true love. I'm the luckiest woman in the world."

I looked up at the couple on stage and felt nothing but coldness inside.