I have that exact same problem. This person sounds like a total jerk. My conselhos is that you should be reminded how mentally mature they are, and how mentally mature you are. Then you just imagine what kind of person is behind the screen. It's probably just some eight ano old who thinks that they're better than everyone else, and thinks that they're art is all that. You should ignore this person, and not speak to her. Just think of how many friends this person has in reality. Probably none, so they make it up por lying about themselves on the Internet. Just think what kind of joke this person could be in real life. So what if this person reports you? You'll only get banned if you've done something wrong. You haven't done anything wrong. So basically there's nothing to worry about. :)
I'm new to this so I probably dont know her, so I don't care if you do anything like yell at her or anything. Something like this happened to me in real life so I can sympathize. Maybe you could send her a message explaining everything to her.