You are talking about arapipirazole [abilify] which is an anti psychotic, and safer than the older medicines in this class.
It is one of the best medicines, but this has to be individualized both in terms of dose and medication choice.
There are many choices.
All have potential side effects.
This sounds like bi polar illness. You have not mentioned what her diagnosis is, or what type of doctor she is seeing.
We do not diagnose or treat on line, of course.
I suggest she see an adolescent psychiatrist for diagnoses confirmation and treatment adjustment.
OK, so you might have more questions or want to give me more information: Please use reply to expert if you have further questions. Also, please click a positive rating [hopefully excellent—that’s how we are paid, per rating]. If you forgot something, just use reply and come back. I am here http://www.justanswer.com/medical/expert-dr-thomas/