I just wanted to quickly add that I am not pushing you to go home. In fact, I think the longer you wait, the better. Neither did I mean to imply that you should walk in door laying down your terms to reconciliation. Again, the longer she isn't sure that you'll even consider R, the better.
I think everyone who has responded, agrees that she should work to get you back.
Was she saying or implying this was the first time she had seen OM since July? You just happened to catch her the first time they met in person?
She may feel it was a mistake to meet with OM, now that she was caught. Nevertheless, she was talking with him on the phone, right? She placed herself in that position. This woman is not in junior high school. She knows a married woman does not flirt and talk to other men the way she talks to men......and it not lead to meeting secretly, and possibly taking it to the next level. She just wanted to know how it felt?
So......what if you had not caught her? That's the question. How long would she have teased and played with OM to see if anything stirred? Is that what she does with the doctor and other men when she talks inappropriately to them? She's testing her feelings?
To me, this sounds more like a woman who is sorry she got caught. She wants what she can't have. I'm concerned if she can easily have you, she'll be looking for the next OM.
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!