My sister finally called me a little while ago. I asked her what happened, and she had pretty elaborate stories about how both injuries (rib & tooth) happened at work.
I've mentioned before that she has 2 jobs. She is an MA at a doctor's office during the day, and she is a stripper at night. The broken rib she says was from a Jell-O wrestling incident, and the tooth was an unfortunate encounter with a stripper pole.
I asked her how everything else was going, and reminded her that I'm always here if she ever needs to talk about anything. I opted not to flat-out ask her if DB was hitting her again... but I'm definitely going to keep my ear to the ground on this one. The moment I have something solid, I'm definitely saying something.
Thanks again for your advice, ladies. I'm still looking in to what I would need to do to report him to the authorities.