I was just going to say, find a doctor in that field that you want to go to and ask them to obtain a referral for you. Let them know that you are hitting roadblocks from your doctor. Specialists tend to take these things more seriously because it is their field.
I'd also read the med side effects for anything she is taking. By themselves, they may be fine, but adding them together could be giving her problems. There are specialists to determine things like that too.

Let us know what happens. I hope she finds some answers soon.