Womyn, wimmin, wymyn, I've even seen wimmen, which makes no sense at all. I don't want to offend any girls who use these terms, but I think it just looks silly. A word spelled wrong just draws twice as much attention to itself, and I think it just defeats the whole purpose. You don't have to change it, just use it.
Girls can play and be tomboys and dress how they like.
So I say, I'm a girl . As I discussed last time, the word is girl . It slowly evolved into the words wimman , wumman , and finally woman. So even if you misspell it to remove the male pronoun, it's still a crap word. So the implications of the word are tied up in motherhood and fertility.