If there is a chance you'll take her back, I'd offer to meet with her and discuss things. Find out in person whether she is truly remorseful and wants a second chance.
Phoenix,
While this sounds reasonable, here's the problem I see that AFW is going to have with that:
What can his wife POSSIBLY say, in one meeting, that would outweigh what she has done, repeatedly and over time, that would be convincing?
She is in a mindset right now where she will SAY, ANYTHING, to get him to take her back. I think John needs to weigh the emotional duress she is under, and those words, very carefully against her demonstrated long-term behavior and repeated infidelity and lack of character, don't you?