On a more serious note, most jobs have all kinds of biases. Army doesn't take older recruits, nor 50% of all recruits are not women/gay/whatever group is right now poplar to fight for. Or commodity traders - one of my ex-gf succeeded in this field, but the amount of macho sh*t she had to go through and still pops up almost daily is unbelievable. Also, some members of her current trading team, which are more on introvert side (yes, there are some traders like that) were asking their boss on private meetings how to handle a WOMAN as their colleague. Some are 50-something, and never worked with woman directly.
She just ain't crybaby like these pathetic people and actually works hard to prove herself in such an environment.