When reconciliation is being considered, I would tell the H to look for an essential ingredient in his WW...............which is humility.
Pride can be a terrible thing, and it can cause a WW to cling to a haughty attitude with her H. If she feels remorse, then I believe you would be able to see outward signs of humility. Without her humility, reconciliation is extremely difficult. In fact, I don't see how it could be completely successful. The pride and lack of humility will cause a WW to hang on to those old resentments and continue to blame the H for her unhappiness........and pretty much everything else.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!