@Dombl I doubt they'll go their seperate ways. It's more than likely MC will bullshit his way to having them stay since they're pretty much out of options to counter the father's arguments, but really, most of us are here to see FMC finally get called out on being a gigantic bitch. That's pretty much been the biggest thorn in the story so far.
I do wish it was the MC doing it as well, but to me, as long as someone's making her and others realize that she's getting nowhere acting like that, it's fine with me. Her issue seems to be speaking before thinking about the consequences of her words, and like I said, the editor's allowing this (might as well throw the MC in there as well).