How can a time-limited evil gain her vengeance?

How can a time-limited evil gain her vengeance?

"I just wanted to be loved."
Ever since awakening the powers of an alchemist, she has been constantly making gold for her family who were on the verge of bankruptcy.
She knew it was costing her life, but no one was with her when she died of a attempted murder.
She wore her live dress with her life, and her sister shed false tears in the Crown Prince's arms.
The third awakening accomplished by being pecked by a bird's beak.
After returning to her past, Milvia only has one year to live. I will take revenge.
So she spent the night with a man called Mad Sara. Now she is a man who only received the rank of a baron. The only price for giving her unimaginable wealth is to keep her by her side and pretend to love her. Because I will give you everything that my family originally had. Just don't let me down while I take revenge.