I’ve been in limbo as a result
Yes, you are in limbo. I sense this, not as much by what you've said as by what you've not said.
Your 6 or so months here have been in part a quest for truth and honesty from your WW, but also in part a quest for truth and honesty with yourself. You have unfortunately gotten neither as far as I can tell.
I do think that it is clear that your marriage is not anywhere along the path of R as R is normally defined here on SI. Your fundamental reality is that your WW has steadfastly not only refused to tell the truth, but has rued the few small bits of truth she admitted to. Her expressly stated wish is that she had lied to you more than she has, so that you'd know less of the truth than you know. Without that initial starting point, I don't think you can ever achieve Reconciliation.
You may decide to remain married without reconciliation. Many do, including many here on SI, for many reasons: "stay for the kids"; religious beliefs; fear of being alone ("the devil you know versus the devil you don't"). If you do, the one thing that is clear is that you will never experience remorse nor empathy from your WW. You may experience a lot of positive energy from her in terms of being a "good wife" on a going forward basis. Lots of attempts to please you and make you happy. My money, if I were to bet, is that this will taper off over time as she becomes sanguine that you will stay, but you know her better than I do. What is her personality in terms of "stick-to-it-iveness"?
I generally don't like to compare threads, but for some reason my mind, on its own, tends to compare yours to that of Walloped, mainly because the big picture elements of your thread are the diametric opposite of the other:
T-gaslighting after being caught, and sex with the AP after confrontation; W-immediate NC and no further contact after confrontation.
T-persistent lies, truth withholding, after Dday; W-100% blunt honesty after Dday.
T-DARVO, cruelty, blame-shifting, minimizing after Dday; W-ownership, attempts to fix what is broken and become better, no minimizing.
T-complete head-in-the-sand pretend it doesn't exist as to your trauma, but making a desperate, over-the-top effort to be a "good wife" to prevent you from pursuing D, for her own selfish reasons; W-threw herself into healing his trauma without regard to whether they would divorce or R.
Then there is the ephemeral matter of the heart. Can your heart cherish her again, knowing that she has the capacity to do what she did and at present is has not been addressed nor fixed. To that end:
W-the A was highly compartmentalized, completely out of the home, mostly in a far-away fantasy bubble, with almost no impact on W's home life at all. W never knew the AP, and hasn't had contact with him.
T-The A took place mostly in your actual home, and a lot of the courting occurred with you actually physically present. The horcruxes of the A remained in your home until you personally got rid of them. The AP is a man you must interact with regularly due to life's circumstances, and a man you once considered a friend.
For some reason, to me the facts and circumstances of your WW's A smack of a contempt toward you, an intentional effort to humiliate and demean you, a form of hatred on the level of spitting in your food or putting your toothbrush in her ass. I do not recall reading any post by you in which you describe comments or actions by her that address this element of her A. I do not buy the theory that the AP was merely a matter of coincidence, proximity, and opportunity. You describe your WW as an attractive, outgoing, easy-to-like woman. Women like that are beleaguered by sexual opportunities with men. If she was suffering some sort of mid-life crisis and vulnerable to feelings of validation, I have to believe that was readily available to her from many different men. I think that, possibly subconsciously, she chose the AP specifically because she wanted to shit in her home. The scary part is that I don't think she has made any effort to get to her why's, to figure out what was so broken in her that she would do the things she did, utterly despicable things, which means she is still broken in the same way she was before her A.
Again, you know all of this. I do understand that you may choose to remain married in spite of it, and I cannot say that, if I were in your shoes, I would have any easier time making a decision. But I'm quite certain in my own mind that if you do stay married, the Thumos who will be staring you down in the mirror in 10 years will have, to some degree, the same feeling described in the title of this thread.