Kinamara's manga / #Ch 53(3)

MC was born from a maid. Her mother made MC dress as a boy to protect. They lived a cruel and sad life. The family their working for us all trash. MC’s mother revealed to the count that the child she has is his. That’s when MC was wedded to ML

MC died and got reincarnated into another world. She was born into that world and knew of her past life while she was still growing. When she came upon a book, she read that the world she is in is part of a novel and now she’s trying to save the main female character