My daughter and her husband just split. She left him and took their 3 yr. old. My son in law, we think, is clinically depressed. He works with and lives beside his dad who was emotionally, physically and mentally abusive when he was a kid and still is emotionally/mentally abusive to him. My daughter has tried her damndest to free him of his dad even finding another job for him but he will not leave. The father holds him "hostage" if you know what I mean. My daughter is in her mid thirties and she has been with him since she was fourteen. So so sad. The thing is, there is something she doesn't know. A long time ago when she was in University, they split up and he tried to kill himself. The only reason I know is because the guy that saved him was going out with a friend of mine. My son in law doesn't even know that I know. Do I tell my daughter this so she goes back to him and they all spend the rest of their life in misery? Or do I do nothing and if he does commit suicide then I have to live with this for the rest of my life. I love him like my own son. Man, this is killin' me. Please any advice.