My friends husband is going through a hard time and is taking it out on her, for months now. He yells at her, makes everything out to be her fault, says things that are just mean and hurtful, says the reason everything is so bad is because she is a terrible wife, keeps threatening to leave. She has tried so hard to be supportive, and I don't think she has done anything to deserve this. I'm trying to help her out. Any advice I can give her?