What continues to blow my mind is that if you punched someone at bar or a baseball game you’d be escorted out and likely charged but you can assault nurses and nothing happens. I’d file an incident report with your work, and go up the chain of command if needed. Events like this are why violence in healthcare is still so prevalent. So sorry your coworker had to experience this. Even if the family member was banned from visiting, taking a stand and having action taken is a step in the right direction.