I haven't posted previously because I simply had nothing to add. However, I do have at least comments now.
First, kudos upon your handling of this whole sordid mess that was visited upon you. You show character, empathy, caring, integrity, and other positive adjectives. I'd never hesitate to shake your hand.
I'm not correcting your English with this next, I'm simply explaining difference between your (excellent) English and mine. The term "ghost", at least here in the states, usually refers to a new dating situation in which one simply ceases to communicate with a new interest. What you're doing is, at least on this board and in the US, known as NC - No Communication (except about finances and kids). So, more precisely, no "relationship" talks, no emotional communication. NC equals No New Hurts.
The type of car that you described building is known in the US as a "sleeper." Usually a sedan or saloon instead of a coupe. Sleepers are cool. They don't have flashy paint or loud exhaust (until you use the cutouts, if so equipped). They do run like a striped-assed ape (pronounced stri with a long i, ped as in pedicure). If you want to read about some grass roots racing and a great engine rebuild experience on a Mercedes-Benz google this phrase exactly, quotes and all:
mazdeuce "r63 amg the unicorn of my destruction"
As for whether or not your WW is rewriting the A history: Not really, because it is a tale of betraying you, betraying herself, betraying her kids and her mother. It is a tale of cheap sex had in cheaper places. It is a tale of her _not_ having integrity, character, the ability to be Open, Authentic, Trustworty, and Honest (OATH) in her communication with you. This didn't seem to be an Exit Affair, done to cement the death of her feeling for you before leaving. It was a reflection of her brokenness. Viewed in the harsh light of reality how could it be anything but hated and hateful?
That does not mean, however, that her path to fixing herself is guaranteed. People _need_ to feel good about themselves for their own mental health and the easiest way to do that is to re-write it yet again, somehow. Fixing oneself is hard, lying to oneself is much, much easier. Less rewarding, but easier.
As you talk to the 2BF can you take notes? Can you tell them, OATH-style, that you're mentally adrift and can't remember some things that were said and ask again?
Your WW has a lot of soul-searching to do to be a safe partner for anyone. Her Why is not "Ohforanewme let me down in some way" or "I craved adrenaline and excitement", her Why is the answer to the question "What about _me_ was so broken that 'Have an affair' was the proper answer to any question and why was that part of me so broken?"
Her breaking things in the hotel room says something. That question should be "Why is it okay to break things and why is it okay to break things that someone else must pay for?" Breaking things like crockery can be very therapeutic, like hitting a punching bag. Breaking someone else's things, though, kind of selfish, no?
Her easing pain through getting drunk isn't so hot a solution, either, is it? She's tasting the fruits of her own actions and she doesn't like the taste. Her reaction isn't, though, go fix herself, it is break stuff (that you must pay for) and tell you how great you are. Not the best coping mechanism.
Your WW has lost something that she values greatly - you and her home and family. She was "cake eating," having her cake and eating it, too, with her A's. Don't be surprised if (likely not if but when) she broaches the subject of Reconciliation. She will be asking herself what she can do to get her old life back. Whether or not she decides that an attempt is worth a go is her decision, but don't be surprised.