1. Finally I know the reason why she hates her.
2. I think if there was anything happened between XX, their relationship would not be this bad. She wouldn't hate her more.
3. I really wish their relationship could be better. However, things are always come to the opposite of what one wants.
I know the reason that she dislikes her finally.
I think if have no XX to leave from it, she will not differ so with her relation, she will not dislike her more.
I how hope their relation can improve, but things go contrary to one's wishes.