I know it may sound horrible but I have stopped not just praying for wife to return home as well as stopped praying for my wife period.
With my ex, at the point where his actions were so hurtful to myself and my children, I said something about praying for him, and my pastor said: "Until you're ready to pray for him again, I'll find someone else to pray specifically for him and his well being." And she did, and it helped me not feel so bad.
I know how much you're hurting, all I can promise you, is it well end. You will start to feel better, but it takes time.
