That is a loaded question. I wouldn't say he betrayed her mom by marrying someone after her death but he betrayed her by being a terrible father who didn't protect his daughter
I agree, not to mention her stepmom is hostile towards her. I honestly want to shout at her stepmom for being a douchebag and tell her to remember her place in the family ヽ(`Д´)ノ
That is a loaded question. I wouldn't say he betrayed her mom by marrying someone after her death but he betrayed her by being a terrible father who didn't protect his daughter