You could have her get a scholarship at some college so she could get away from her mother? But it sounds like you got it all planned out! See your fine girl! haha But its no problem, just tell me when you want help, email me, comment, whatever. haha
That would work, you just have to make sure she gets real close with the TAI boys before you do that or otherwise its just going to be random...you know make sure there is a strong connection between her and the other characters...and make sure Oliver shows up later in the story at least a lot of phone calls or something or otherwise its going to be weird because he is a huge character in the beginning of the story and you don't want him to disappear from the story totally. =)
Ah, I am so honored you asked me...I don't know much about Olive Sykes though...I don't really know his band...but I can try if you want...I don't know how much of help I'll be though. haha
As for your story, I am psyched about it but if she has to pick between the guys one will be alone and that will be sad =( I am sure inspiration will hit you sooner or later...if not you could always ask for a co-writer or something...