Sounds like a psycho girlfriend. Hopefully she gets charged with filing a false police report, etc, and Zimmerman ejects from that relationship.
A friend of mine got screwed by a similiar psycho girlfriend. She was blacked out drunk, flipped out and assaulted him, called the cops, and the feminist cops who showed up ignored the marks on his back from being shoved into the dryer because he was too tanned, naturally sided with her story, and arrested him for domestic violence.