Friend's marriage...?

You are her sounding board, nothing more. You should not risk losing your job over her. She doesn't want to leave him. Until she does, nothing will change. The kids are not happy. She would be taken care of in a divorce settlement. I would tell her to let you know when she is ready to do something about it, otherwise, you don't want to hear any more about it. Either she will do something, or she will find someone else to complain to.