If at your age you still consider yourself as a girl, I don't
understand why your not-so-good mum can't be one. How many times
have you seen those 40+ females regard themselves as 20 in their
heart, which is younger than you. Well, in this case, should I call
them a child? Futhermore, there's no stated age for women and girl.
Do you see people saying, girl = age 5-15 and women = 20-30?
http://en.wikipedia.org/wiki/Girl
LOLOLOL @ YOU GIRL.