In monitoring the situation they are still communicating at work through emails etc and go for coffee together.
If she still works with him, sends him emails and especially goes for coffee with him.......I'd say it's a safe bet she's still having EA.
I don't think a woman can continue having even a little bit of contact with OM and expect EA to end. Every time she sees him at work, hears his voice, etc., it keeps those PEA's stirred up.
But yes, you deserve to know what's going on. I just don't know that you can be sure of getting the truth from her. I have my doubts when a woman will not change jobs and put space between her and 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!