Very...strange. You have started a fic which will turn out either great or aweful, I cannot tell which yet though. Anyway you should explain things more. The idea that she has to live a lie wouldn't be appealing to her. Then there's the question. Why does the wizarding world think she's a boy because they have no reason to? Remus would have known Harry was a girl, Lily and James had noreason to lie about the gendre of their DAUGHTER.