JFaye,
What kind of response are you anticipating? Or are you? I wouldn't expect one, if I were you.
Most men, I think, who haven't had experience in this area won't know what to think of the term "Emotional Affair". I never heard it before I came here. (BTW, while my tag line might make me look like a newbie, I've been here over a year; I have changed my name a few times) I wouldn't predict how OWH will respond. For a lot of men, the first response would be..."Have you SLEPT with him?", and if she says no, which you've already stated they haven't, he may not take it as seriously as he should.
I think you did the right thing, don't get me wrong. But often times doing the right thing doesn't necessarily bring about the "right" response, or at least not initially. I could see how OWH could get the letter, read it, ask OW about it, and take her for her word when she describes you as a paranoid, irrational, controlling wife. (I'm not saying that you are, but she will manipulate him, you know that) So, he might believe her, and just choose to keep an eye on things in the future.
In the meantime, OW will tell your H, who will probably become angry, and then things at home will heat up.
I guess what I'm asking is...have you allowed for all possible outcomes? This could drive H out of the house, at least temporarily, if he really believes that he is in love with her. Things could get a lot worse before they get better.
As I said though, I think you did the right thing, especially since H has admitted it to you, and you have records to back it up. Doing this based solely on suspicions would be careless at best.
Good luck, and keep us informed.
clay
BTW, you missed deleting her name in one spot...