Suggest that her husband needs treatment. He needs to take responsibility for, and change, his behavior. Battery is a crime, and a record may be helpful in the long-run to hold him accountable for his behavior. Encourage her to utilize any local resources available to victims so that she can get as much information as possible about her options. The name and number of the program for your area is listed below.
Some programs offer support groups, individual counseling and other legal advocacy services.
You may find these helpful. Assessing whether batterers will kill and signs to look for in a battering personality. Personalized safty plan for the abused A print ready page that lists steps and items to prepare in case a speedy escape is required. Be very clear that the violent behavior is unacceptable. This is the first priority.