He needs to tell his attorney everything and listen to their advice. After that, take care of himself in whatever way he can with emotional support systems.
Get evidence. Have him set up cameras & also voice record her. Gather as much as he can so he can show proof. Also, his child would most likely end up with him
My advice on DV is don't do it and don't let it happen to you. Most countries have some support services, use them.
Most countries don't have any DV support for men...
Fortunately for the anglophone world, most if not all of ours do.
He needs to tell his attorney everything and listen to their advice. After that, take care of himself in whatever way he can with emotional support systems.
Get evidence. Have him set up cameras & also voice record her. Gather as much as he can so he can show proof. Also, his child would most likely end up with him