Theres a lot of spoiler in this comment section, especially in the beginning chapter
He blames her for the death of his wife so basically the carriage accident. He thinks she is cursed and that it was her fault
He hates the daughter so much because his wife died. And he blamed FL for it.
In the first time i think its because his wife passed away after gave birth the FL. But now i think there's something more complicated than that
In fact, I also suspect that there is something else going on, especially after that father-son conversation a few chapters ago ...
anyway, thanks everyone for the replies
but does anyone know why the father hates his daughter so much? I mean, is it really just the carriage accident, something she had absolutely no fault for?