He treated her Ok because her sister loves her, when she turned 12 (around the age of awakening) he was hoping the sister would aweaken. FL awoke instead and with "a cursed power" aka a stain on the family awakend and had a taboo power to boot.
She worked hard learning the tasks hoping for aproval from the father before she awoke, she was self taught using the books in the house hench why she could do the tasks + having watched her father do the work for 9 of her lives.
The father never abused her until she awoke, but he straight up ignored her existence = servants follow the master. So the servants also ignored her aka did help her in her daily life. She had to dress herself, bathe herself and keep her own room clean because the servants ignored her. She was a daughter in name only to the outside world.
When she awoke, her mere existence threathened her fathers ideal.. as only one guardian can exist at a time.. so she had to die for the sister to later awaken.. but murdering a guardian may cause the power to be lost.. hench the inprisoning of fl.
Contradictory backstory
-Said she was jailed and neglected but somehow is able to handle all the work of the family head.
-Said his father was at least normal and she thought he was loved until out of nowhere when she was 12y.o. his father told her she was daughter of a commoner (why the change of attitude on his father behavior? Why didn't he treat her bad since the beginning?)