Yes.
Girls are people...
People play games...
I must be some genius for figuring that out, huh?
Pretty much this. The only ones you should be worried about are the ones that make a big deal about their gender.
I don't think the OP is lying and we shouldn't make a big deal about someone talking about what they went through, maybe she isn't used to online games like she told us. It's okay if you are a girl or boy, just as long as you don't flaunt it, you are fine. Honestly the people who called her names on that server are just immature kids. The OP isn't guilty of pretending to be a girl until proven guilty imo.