I feel your pain, I am going threw a same situation, as my husband has left me, I have asked for prayers on this, because prayers do work. I will be praying for you on your situation.
Patience is the big thing here and I know it is hard, because that is my problem to we want it to happen now, and that is not what God has in plans for us, it is on his time not ours.
Lord Jesus please go into his wifes heart and bring the love back to her to be a family again. Watch over the family and allow her to feel the love again, watch over the kids as they are seeing what there parents are going through, lift them all up Lord Jesus with the love that they have to offer each and every one. AMEN