My H and I are on the road to D. We both are aware of it and are both (ok me, who knows what is really inside of his head), fine with that fact. However, a sort of unique sitch, we still reside in the same house (separate rooms, separate lives).
One major exception, anyone that comes into this house, unless they have been informed of the situation, would see no difference in our R now than in our R years ago. Except that I smile a whole lot more. We still talk about house, S, schedules, with little problem.
I am not trying to discourage you in any way, I actually think being friendly is easier and way less stressful than fighting.
So I would take it for what it is. You get along. Does that make a M? No but it can be the foundation of a R in the future. She has to go through her process and finish. Believe me, you do not want to do this a second time.
They go through these periods and periods of detatchment. It is all part of the cycle.
Time is your friend and it is on your side. Use it wisely and you will never be sorry.
"Acceptance doesn't mean resignation. It means understanding that something is what it is and there's got to be a way through it."--Michael J. Fox