She could be insane and caused self-inflicted damage.. there was recently a case of a Judge who was charged with assaulting his wife, luckily he had videos of her jumping out of a moving car, hitting herself etc otherwise he probably would have been convicted.
The cops investigated and Travis was cleared so I'll give him the benefit of the doubt, it's still a possibility he's a wife beater though..
All I know is I hope Cain leaves Travis in a pool of blood at UFC 200. I don't usually wish bad things on fighters, but he's probably the biggest scumbag / dirtiest fighter in the UFC today.