A female in a full suit of armor would be agreeable. Most people would feel bad killing girls, or someone would call it sexist if you could, but I don't really care either way. =D UT has tons of females to kill.
If you mean story, then yeah, having some females will probably happen, if the story is supposed to be a lot larger.
VE - http://www.formspring.me/Vermineater Now Playing: Pokemon: HeartGold, UT2K4, stuff