I've been reading Eric Horst's Training for Climbing. A lot of the advice applies across disciplines: strengthen your core, be relaxed, eat properly, get enough sleep etc. Chapter seven, Personal Training Programs, had me chuckling:
As a final note, the belief that physical performance tends to be worse during menstruation is not absolute. While the menstrual cycle's affect on performance varies widely among individuals and from sport to sport, at least one study has shown that grip strength was greater during the actual menstrual phase (Davis 1991).No doubt, the grip is stronger. I know that I've wanted to put my hands around some necks, instead of holds, during that time.
In the same chapter, there's also a section devoted to special considerations for females and "juniors." Horst mentions teenager Tori Allen, who is already an accomplished, award-winning climber.
Here's a video from a segment that the Discovery Channel did on Allen.
Needless to say, Allen is athletically gifted.