To be *brutally* honest, if she believe you're going to be dangerous to her, your chances are slim. However, how dangerous can you and this girl be? I'd consider myself very violent in terms of how i think and what i say i'd like to do, but i'd never act upon them.

Unless you want to become a massive political activist, i'd say she didn't have much to worry about...
She doesn't think that I will hurt her. She thinks that I will encourage self-destructive behavior, although the main behavior isn't really damaging. Unusual, but doesn't do any real harm, at least as it stands. And the rarer behavior doesn't do any permanent damage, and she hardly ever does it.