So she has told you that she is sorry for the hurt she caused you. But has she ever said she was sorry for the affair? Two totally different things there. Believe me I know.
Also had OM wife not found out after 12 years would your wife had of ended this relationship? Guilt of what she was doing nor guilt of possibly hurting you did not stop it in 12 years. What is the C take on that? You may not think it is important right now because it is over and how and why may not seem as important as it is. But what if's can follow you your whole life if you do not have answers that you can truely believe. And they breed discontent.