I've been reincarnated?

Cecilia was a normal person who loved to read, and that's how she died.

Well not exactly, she was reading while on a bus and a shooter came and killed almost everyone on the bus including her. However when she woke up she was very surprised to see that she wasn't dead! She then realizes that she was her favorite character in her favorite book series "The mourning flower" however her favorite character was a very well written villainess of the novel, sage who did not have a good ending. She is determined to change that.