Have you and your W discussed an open infidelity policy? This is where she has to tell you when she talks to the OM no matter how small and contrite that interaction might seem to her. She has to prove to you that she can be trusted.
In cases where an A has occurred, it is the WAS's responsibility to alleviate the fears of the LBS. That is the only way to total healing. There are several great websites and books on that subject of healing from infidelity. If she is serious about R, she will have to put in the work.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.