I became male lead stepmother

[ AHHHHHHHHHHHHHHHHHHHHHHHH]
When i opened my eyes i became a Beautiful girl, which was scary. I saw many unknown people calling me their daughter. Is this real??? Why they wearing so weird kind of dressing just like in some historical novel. Wait!!! Is that mean i reincarnated inside the novel. The novel i was reading " i became stepmother of male lead" Because i made a wish to reincarnate inside the novel and it true. But this is scary, i didn't thought it will ever get true. So how will I deal with this?

I am 20 years old, Elliot. I got hit by truck while trying to cross the road TvT ofcourse it was my bad luck dying so young. My dream of becoming rich and independent women become all dream at last. But how just how did i reincarnate in the novel, a crazy novel. It has no hope and even that i became a character who die fast. I became lady Marina de Lucas From baron Koreche de Lucas, who is my father. Who was very poor TvT he used his all money and now he was in debt so just because of him i needed to marry some rich guy but all i could find was old man's, gross!!. But one day when i was secretly gone to bar i met very strange person. He is said he'll give me money so that I can pay debt. He was no one else but male leads father, the Duke. So i believed that i was going to dommed. I had no other reason but to accept his offer. At least i can get rich, and he is kinda hot. I can get away from this strange family members. Everything going as i read till now. But i can't die by the hands of an evil male lead. No wonder that kid doesn't even know that he going to havs a stepmother. But he turns out to be dangerous for supporting character, me. So i need to impress him TvT.
But i am great at it because i used to babysit kids in my past life, hah thank God it will help me.

So i need to live happily ever after without dying from hands of agressive male lead. I hope i don't die TvT