It is pure mythology that women cannot perform as well as men in science, engineering and mathematics. In my experience, the opposite is true: Women are often more adept and patient at untangling complex problems, multitasking, seeing the possibilities in new solutions and winning team support for collaborative action.
I was very fortunate when I was little - I played basketball. You really absolutely learn how to be a team player, how to win a game, to accomplish things, not just for yourself.
A lot of people believe women can't do tech-y stuff. Becoming nerdy doesn't have to mean the short-haired guy, but can be the woman with very long, beautiful hair.