Legal Question in Criminal Law in Texas

You might video record an incident so that you can share it with your father later. Perhaps he just does not realize how bad it is and he can at least insist she get some kind of anger managment counseling. When you share the video you can also share with him how much it upsets you so if he won't do it for himself, perhaps he will do it for you.

Or, you can call the police. Whether they file charges will depend partly on your dad's cooperation but you can make a report as a witness. (You can share the video with them.) Many times men are embarassed or just don't want to accept that they are being abused by a woman - especially if she is younger.