Gabe, I'll say this- after seeing the pain you were in last week, I wouldn't go risking further injury fighting this d-bag... Like others have said, only with a twist, talk to the sis. Blood is thicker than water. Does the rest of the family know about this? How close are your wife and sister? Maybe if your wife talks with her (both being pregnant this will carry a lot of weight in the situation) it will be better than [Big?] bro having a chat with her. Women tend to be more open to talking with other women, unless your sister hates your wife or visa versa. If captain D-bag leaves bruises on her that's just more evidence if you involve PD. Doubt they would be responding, but I have a good friend with Jeffco that's very good with DV that could appeal to your sister- and she's a female deputy, so again that woman thing... Good luck brother!