DD, It is my opinion that God does not do the work for us, but simply shows us the path in our hearts. Ultimately, it is up to each of us to decide for ourselves what to do. I also believe that God works in mysterious ways (cliche-yes, but I believe it). Consider the voices on this forum as, perhaps, His way of helping to guide what will ultimately be your decision and your actions.
In a way, you have been given a gift. The ability to change what was a marriage that neither you, your wife, nor God was happy with, into something to celebrate. It will not be easy. It will be the most difficult challenge of your life. Ultimately, however, the best rewards come with sacrifice.