You know, this actually sounds like sth a girl would ask a guy.
Well no there's nothing "wrong" with it of course. If you're talking about a girl with better skills than most men in general, why I'd love to be a powerful swordslady myself any day and kick some aaa.
But if you're talking about a girl who's better than HER man, it depends on whether the guy has some other strengths to deserve her. If he's a loser, then my opinion is she's a loser herself to be baby-sitting someone like that.