T.H.
I would ask her what she wants to do, and although I would not usually support waxing of anything at such a young age, I think this case is different! Bleaching is a good alternative too...I had a roommate in college who used to do hers and it looked good! My niece, also very hairy, had a mustache of sorts as well and she did not want to mess with it at all even though it drove her mother crazy! ;) So, if she wants to do one of these things then I would do it, if she doesn't, let it be.