have you looked at sites like Playscripts.com and Theaterfolk.com? They specialize in theater for younger people (but not solely) and they definitely have single sex plays....you can even put in your requirement.
finding plays that are just predominantly female is pretty difficult....musicals are damn near impossible. I've always been grateful that my program has a strong number of men. (Not 50/50...but good enough)
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.