My first thought is these are physical abuses, and not adultery in the case of forced prostitution (adultery implies a voluntary participation, IMO). She should move out to end the abuse and see what he does from there. He'll probably leave the relationship by being with another woman and the abused spouse would then be free to divorce. That would be the hope and intent, but even if he didn't and they remained married but separated, at least she has not sinned against the Lord. Just my two cents. Difficult matters, indeed. I wouldn't have an ounce of condemnation for a woman divorcing the slob in those circumstances even though, technically, there are no Biblical grounds for divorce. I leave that in the hands of God who judges in truth and in accuracy and considers all mitigating circumstances.