I honestly don't know. One thing I would consider, he may have cheated on her and that's why she is going postal. Again, I don't know the two people so I can't say for sure. I'm an analytical fellow and try to see every possibility. There are a lot of scenarios here. So, my best advice would be to leave him be. If he is a good friend, he will contact you after this blows over. I know it sucks waiting and wondering, but that is better than dealing with what sounds like a bad situation on his end.