Hurt, to move the thread, you ask the moderators to move it.
Your roller coaster emotions at this stage are totally 100% normal. You should expect this to continue for quite a long time, possibly years.
In the end, your main goal should be to find the truth that your heart is trying to speak to you in terms of whether to R or to D.
To that end, a first step toward finding that truth could be that both you and your WW read the book "How to Help Your Spouse Heal from Your Affair" by Linda MacDonald.
Another good resource for you is in the Healing Library, in the yellow box on the top left of this page. In particular, you should learn about and implement the 180 in your life. The purpose of the 180 is to help you detach from the painful situation so that you can breathe and clear your head. Again, so that you can try to find your truth.
Basics: eat regularly, get plenty of fluids, and exercise as much as you can. It will help you sleep.
Do not go to MC with your wife at this stage. Your WW, and you, ought to each seek IC. Your wife shattered your marriage and broke her vows. Something inside of her must be rotten to enable her to do that. She needs to figure that out, and fix it, before MC can add any value.
Around here on SI, the paradigm we often espouse is that your WW killed your marriage by engaging in her A. You need to come to peace with the reality that the marriage as you knew it will never come back. For R to be successful, your WW needs to show you, through her consistent actions over a long time period, that she is somebody with whom you would like to forge a new relationship. She needs to try to "win you back".
Keep in mind that what you know about your WW is that she is a liar and a cheat. She lied to you for years about the most intimate aspects of your marriage. You are the person she vowed, on your wedding day, to remain loyal to. She looked you in the eye and broke her vows. In other words, what she has proven to you, more than anything, is that she is a dishonest person, a person who is not worthy of being trusted.
Assuming their sex was unprotected (affair sex is almost always unprotected), she also risked your health by exposing you to a possible STD. Have you been tested, by the way? Has she?
By the way, she could very well be lying about the scope of the A. Most WW do what we call "minimizing" and only admit details in "trickle truth" fashion. Many BH's require their WW to submit to a polygraph on this issue.
I don't think her offer to have you speak with the AP is worth very much. They have by now had an opportunity to collaborate and get a story together that they both agree to tell. She is protecting him to some extent by offering to let you speak with him and hear him tell you the scripted version that they have crafted.
Do you know him? Is he married? One of the strongest pieces of advice here is to reach out to his betrayed wife and discuss the A with her to find out what she knows. You should do this without first telling your WW that you are doing so. It exposes the A to the light of day, and it can be a useful way of getting information about the extent and scope of the A.
Good luck.