Was W's lawyer asking for a response from you? If so, maybe you need more information about what was meant in not going forward.
I agree with Broke's advice. Don't be too fast to respond with an answer for her attorney.
Having second thoughts about reconciliation is not uncommon, from what I read. Many times the LBS is so focused on saving the marriage/family that whenever they do get their S back........then resentment hits them, and the LBS becomes the WAS. So, maybe you need to seriously consider if you want to risk taking a chance on going through this again. Let the final decision be left to you, instead of your WW.
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!