
I think the father turned back time because he wants his daughter back. She misundertsood,he gave her the sword not to kill herself but to kill the guards,he said "endure it" to wait for a few days to let the guards have their guards down and there will she attack. And that's also the reason why when she fainted he became anxious and had been staying by her side while she's sleeping. He said "please not again" that means he don't want her to die again. She thought her father hates her but the truth is he's just pretending to hate her because he doesn't want her to be his weakness,as he said on chapter 6 to the crown prince. Oh yeah,it could also be because of her mother. He couldn't protect her so he wants to protect the one she left,her daughter.

Ohoho this is getting interesting~. So the brother doesn't know that his father has been hurting her?Ofcourse,maybe because he's always gone. And he's always been mad at her for being disrespectful not knowing her circumstances?I mean,why would he get mad when he doesnt even know anything and not even see her or care about her?
Dunno who to ship,if it began in the past with the black haired guy then we would definitely ship them. But it began with the white haired so I dunno ┑( ̄Д  ̄)┍