For quite a few years I wanted to be a boy, I guess partly because I was told by many adults that I was not girly enough, and I have few “girly” interests. My personality does not fit the stereotypical girl one either. It’s only after accepting I do not have to care about stereotypes that I am happy to be female. Definitely agree with Seagoon to ask her what she thinks it means to be a girl or a boy, whether she just wants to do what boys do, or whether she (he?) identifies as one.