Ren's Manga

im kinda confused as to the story of this, Usually when the MC transmigrates into the body of someone in a book they read or a game they played, we get a basic rundown if the story and the role they played. The title is about the being the villain and actually becoming one, but i don't see any signs of her actually having been a villian in this story in the first place, in fact she seems like more of a side character if anything. What is the goal other than her becoming the head of the family?
The art is average, but I don’t see this going anywhere.