I'm not a girl, but since no one else has chimed in...
Any sort of incapacitation is grounded until resolved. Presumably there are are hormone or other therapies for this sort of thing. If she wants to persue flying she should:
1) Get the issue treated, to a level that is acceptable to aviation medical standards.
2) Then (and ONLY then) go see an AME for a first class. Bring ALL of the relevant records with you.
You probably need some professional advice. There are various services staffed by ex-AME's which do that sort of consulting. I have used this one, other folks here can recommend others:
http://www.aviationmedicine.com/