NH, True it does sound good, but good to be guarded. I would validate her but not too enthusiastically. She still has a lot of work to do on her end to get OM out of her head totally. But I don't think it's effective for you to be telling her that. Better for that type of advice to come from the MC.
Keep up the PMA.
Try not to get drawn in to her again too quickly. Keep your distancing. It's the pursuer/distancer dynamic clearly at play. Give her a few crumbs of validation but keep on forging ahead with your own life.
I know I'm not one to talk, as I'm in limbo, but I am trying to keep my distance from my W and she's being more friendly and caring to me. It's subtle but there.
M: 59 W: 53 M: 9 yrs T: 14 yrs No kids together but D30(hers), S27, S24, D21(all 3 mine) W moved out 11/18/2013 D-Day 12/14/2013 W moved back home 12/1/2014