If the "affair has ended," then there should be no contact whatsoever. Until she's ready to agree to that, then you really have to assume she's still having an affair. Waywards will often tell their spouse that they NEEDED to contact their OM/OW "to get closure," or "I couldn't not tell him, because that would be MEAN," etc.

It's all bullchit.

Do you think she would agree to full no-contact and transparency?

Puppy