M....I agree and can tell you I felt everything that you are currently feeling. I think it made easier with no proof of OM to stand but in the end and even now when I see her there is nothing there for me emotionally.
I was prepared to stand for a year. It would have been hard to continue without any movement on her part. If the general rule is 1 mth for every year of MR then I would think you will know what to do after the year is over.
I wish nothing but the best for her, I hope she is happy and healthy. TBH the D process has been very easy so far. My W and I have agreed on everything. L costs will be very minimal so I am grateful that we have been able to maintain a respectful relationship for each other throughout the process.