I will wait for feedback from my W's meeting to decide when to deliver the "Drop OM and go to MC or start the legal process" message. If I get positive feedback - such as her pastor seeing encouraging signs and wanting more sessions with one or both of us, or my W making some effort, I may hold off. If I am told my W is resisting their message, then it's full steam ahead and let the chips fall where they may.
Lead, don't let things happen to you. Choose, decide and take confident action. Letting the chips fall is passive.
While I agree with Coach, I know how hard it would be for you to do.
You have posted on my sitch so many times about not letting her run me through the wringer. You have been holding on for so long. You have been patient. After you hear from her pastor, which ever way the meeting goes, I think it is past time for the drop the OM speech. I know you want to save your M, but she has to do some work too. It doesn't sound like she has had to do very much to make you hang in there. I understand.
Like you told me, take the leap of faith, lead your family, let her know you have made your choice and it's past time that she made hers. You will be great no matter what. That's one thing I do know for sure.