An option to consider is the vip tour. They take you straight to the front of the ride so no waiting in long lines indoors. It is money but would allow her to experience rides then the rest of the time she can bow out of a ride if she is overwhelmed without feeling like she has missed out.
Universal has family rooms in every ride but you have to get to a certain point in the line before getting to the room but we have used that as an air conditioned quiet space or if we got to a ride and my daughter wasn’t able to ride at that point (too overwhelmed).
If you really want to do Hagrids get the assistance pass because as other have said the queue is very cavelike and claustrophobic. But the assistance pass does bypass most of that.
Universal has family rooms in every ride but you have to get to a certain point in the line before getting to the room but we have used that as an air conditioned quiet space or if we got to a ride and my daughter wasn’t able to ride at that point (too overwhelmed).
If you really want to do Hagrids get the assistance pass because as other have said the queue is very cavelike and claustrophobic. But the assistance pass does bypass most of that.