It is best to wait to see what the neuro says. Sounds like possible seizure disorder. My daughter also first presented with migraines and vertigo type things going on.....
Your daughter may have a lot of things going on as far as adjusting to that many meds in a few short weeks. Some of the confusion etc may wane in a few weeks. Topamax and depakote do well to help most migraines. There is a close connection between migraines and seizures for some...
Hoping things will settle down very soon and it does sound like you are finally getting some better answers!!
I have 2 teens with seizure disorders. Both have had some dizzy issues as well as migraines as well!