Here is the problem. Is she coming back to the relationship because OM is dumping her or is it because she wants to reconcile? Based on what you wrote I think it's the former. It will never last.
Have you read other threads on how hard piecing is for other posters? Joe2017's W came back because she got dumped by OM and had some bad flings and he had to end things after months or trying to reconcile. He put his kids through the entire process again and put himself through hell again.
I am not saying reconciliation is not in the future for you but you can't just jump back in like nothing happened. IMO you will be making a big mistake.
