I feel like I'm the only one who wants character development for the dad and for him to have a serious talk with her. Like have the dad realize his mistakes and have him work on himself and also talk to her about how he knows he was a dick. She doesn't need to forgive him. I also need to know...
@JWChibi Thats some detailed "guess" .
And there's literally been nothing to assume that the older brother has romantic feelings for his sister. She herself has only showed feelings for the guys she was supposed to marry.