I'm sorry about what your Mother is going through. This guy is gonna get what's coming to him, being a Buddhist I believe in karma, so just wait and he'll get what he did to your Mother ten times worse. But you are her daughter, she sort of relies on you for a little reassurance. Even though it may not seem that way, she is probably ashamed of her way of life as well. You must aid your Mother during times like this or else she won't get any sense and worse will happen, God forbid. I think the universe will unfold as it should.