I think my sibling has got some sort of trauma bond with his evil abusive wife. I do not understand it - he can say she gaslights, emasculates, criticizes, and berates him but he cannot find a way to leave. The children are grown (an earlier reason for not leaving) and all they really have is the house but he just won't leave her because she doesn't want a divorce (his words) - I have no idea what is wrong with him. I have a house he can live in rent free, he can find a job here, and our parent has offered to help him as well -but he just keeps going back to her.