i've struggled with episodes of those types since a very young age. i would have to suggest she try to learn some grounding techniques and see if any of those can help. aside from that and her trying to use self talk (telling herself she is real, alive, etc.), i don't know what else to suggest as for me, i always had to wait until it lessened on its own. sometimes, it was almost 24/7 though which made it more difficult since there was no break in it. i don't know of a med that can help with it either, but hopefully a specialist will be able to help with something.