the manga is abot the novel creator who wanted to live in it. she named the fl with her name, she has a younger sister and she is the villainess her uncle is in love with her and wants to have the fl for himself...when the novel author dies she recarnetes as the sister not the fl but she got there when the sister did all those evil things to her sister and got the punishment so she decided to save the fl from the uncles plans..that's all I remember
Heyyy I asked my friend about this and they gave me the title "The Reincarnated Villainess' Dark History" hope this helps!!