How important is this?

[Harrier]

My wife and I have had some rough times as of late including a 2-3 month EA by her with a co-worker. Now it's not as bad as some of the EA's I've read about here (it was mainly confined to work hours [They really didn't work together except for a few hours one day a week], and mainly expressed in the context of emails. No L word was ever used by either party) but it was still an EA.

Now my wife and I are working on things. She has agreed not to divorce and to work on M with MC. She is still very angry with me and acknowledge that we need to take things really slow. Last night we had an R talk, for the first time she acknowledged that it was an EA. Before she always said that "it was couple of emails," or that "they were just friends," the typical excuses.
do you think this is a significant step? She said she doesn't want to give it more importance than it was i.e. she says it was diversion from her home life, but doesn't think it reflect that she never loved me or the marriage was a mistake, etc.
Do you think by calling it an EA it gives it more importance or is it really not relevant? Love to hear your thoughts.