Spoilers taken from novelupdates spoiler forum (the user got these spoilers from naver)
Spoiler!
FL was taken from her birth mother at a very young age to be raised at her father's manor but he and his wife (count and countess?) abused and neglected her real bad up until she was basically sold in marriage to the duke and forced by her father to get pregnant (Idk how he forces her but the Duke did not force her. It was her father. Perhaps by threatening her mother?). After the marriage, the count kept making constant demands for money. FL, who's severely traumatized and heartbroken for marrying a man she didn't love, can't bring herself to care for the child or her husband.