['Annoyed' is certainly one way to put it. She's witnessed events that none of the others have had the opportunity to experience, offering her enough perspective that has somehow managed to make her even more frustrated with the situation than she might have been otherwise, considering how much of it she presumed to be an act.]

Perhaps you would, but I doubt he'll feel so inclined, and it will mean little if it is forced. Even so, he owes me nothing.

[What are they to one another? They could have been something more, could have been family if things had worked out differently, but as it stands, when they speak all she feels from Jasper is contempt and resentment. In fairness, her own feelings hadn't been exactly charitable, either.]

I've been away from home since I was a child. You and I were given the chance to get to know each other once more, but Jasper and I are strangers.