sunny is on to something here. I think at some stage I will also need to let W know that the door is still open to discussing a reconciliation. I am not sure how yet. For now she will have seen someone who has been willing to let her go , even helped to shift her out. When she has been by she sees a happy person adjusting to being without her well. Her guilt about OM is what forced her to move out there is no way she could have stayed and continued with him once I knew. Even if they have broken it off ( which is possible) she still needed to get out. But then I also need to get over the lies , the pain of what she has done to me and this will take time. To your W right now fixing whats been done will look impossible.
You need to show forgiveness and gently show her the way home. She may chose not to follow but its one more thing to try.