I agree, MWM, that the dreamy, foggy state may be why difficult child quit taking the medications.
As for doctors who prescribe too many medications or too high a dosage, when it's the medication itself that is causing the issue, read "The Boy Who Loved Tornados." You will tear out your hair in frustration and sympathy.
know she is concerned about the times when she acts out and forgets it happened.
This is a good thing, that she believes you and is concerned about it. Reminding her of this will help her get back on and stay on medications. If not now, then at some point.
In my NAMI parent-to-parent class, there were several parents whose kids went through that. It seemed to be classic for bipolar psychosis and other things. My heart aches for you all.