As seadoug said, textbook.
I would guess, being on this site for many years, you have only a small fraction of the story.
Obviously she has been in contact with this guy for some time. Do I believe is was only an EA? Not for a second, but when the opportunity presented itself, she basically told you to fuck off, I'm going out with an old flame and there's nothing you can do about it.
Then she tried it again when you slapped the papers on her.
By this time, she's probably covered her trail by erasing and deleting all incriminating evidence, again, textbook.
The advantage for you, if you played it right, is that she doesn't how much you know. You NEVER reveal you sources or methods. EVER!
My fWW knew I was suspicious, but kept going. I had a keylogger on her computer and had her secret emails accounts and chats. After I confronted her, she knew it was over, yet she persisted to trickle truth me and minimize every detail.
She never figured out how I got the info, but I prepared a list of about 50 or so questions, I wanted names and places, and specific details, as well as some very self aware questions as to reasons and motives. The kicker was any, and I mean any lie on even one answer, and I was prepared to call it a day and this marriage was over. I convinced her I meant it. Of course many of the questions I already knew the answer to, and some I didn't, but she didn't know which ones.
I think I got maybe 70- 75% of the truth, although it was still minimized.
Maybe that is worth a try.
I had her answer them on the computer, and the keylogger was still on there, so it was interesting to see her first response, then go back and change it before she let me read it.
I don't think she admitted everything. Just everything she thinks you might know about.
Good luck, brother.
And I think you handle this as well as anyone could have, Good job!
[This message edited by twisted at 4:57 PM, April 12th (Thursday)]