Sorry for the loss of your daughter and the marital problems that you find yourself in. That being said, what are you going to do about your recovery?? I know it may be hard to focus on that at a time like this, but really it is necessary for you to do something if you don't want to fall any further and to be able to gain some control of your life.
Nothing changes if nothing changes. Having a recovery plan might also smooth things over with the wife, not sure about that, but at least it will do something for you.