I agree. Anyone inside my house is out to do harm to me and mine. There’s a huge difference between a stranger, drunk or not, on your front lawn and one on your living room couch. You don’t know if he’s just waiting with a gun hidden under the cushion to blow you and your family away.
Then you grab your gun, call for reinforcements and wait behind hard cover.
If the wife had any brains, she should have left the house with the daughter, called the police from her cellphone and let her old man finish his drink at the bar.