This will not help you, but where moyamoya (or anything else, for that matter) is concerned, you have to educate yourself and be your own advocate. My husband had a stroke less than 30 days after his EDAS. The ER people of course had no idea what moyamoya was either, but the neurologist did. They didn't give him hydration either until the second day. Problem is, he went into status epilepticus and they let him have seizures for 36 hours before they intubated and sedated him. By the time I got him out of there and into a hospital where they knew what they were doing, he was pretty much gone and never regained consciousness. I am going to file a complaint with my state's hospital licensing board.
My suggestion, and who knows if it will do any good, is to do the following:
1) Print out as much stuff as you can from legitimate scientific sources about moyamoya. Make sure that when your daughter goes to hospital, she has it with her. If she goes to the same hospital frequently, ask to have it put into some kind of permanent record.
2) Tell them that she had a stroke and that he has moyamoya.
3) WATCH FOR SEIZURES!! If she has seizures, they MUST first administer anti-seizure meds and if they do not knock down the seizures within 30 minutes, they MUST intubate/sedate. Do NOT let them tell you they are focal seizures and she is fine. The neuro on call at my local hospital tried to tell me that until I made her go up and actually check on him after 36 hours of seizing and his neurosurgeon in NYC horrified at what they were doing.
What they gave your daughter is a whole cocktail of painkillers. Why they gave her painkillers for a stroke is a mystery.
You are going to have to be her advocate, because obviously your hospital is regarding her as a "hysterical pregnant woman". It is reprehensible.