BH here. Sorry for the wall of text, but I really have no life.
My WW, soon to be EXWW, certainly rewrote our history to a degree in order to justify her A. At one point, and only after I had filed for D, she said that the M was doomed anyway. Funny thing, before being forced to confess or be outed, she had begged everyone not to say anything as it would destroy her M. You know, the doomed one. She even agreed to go to therapy if everyone would keep quiet.
I want perfect, but a damn good husband. Whe we married, I was in university. She barely made it through high school and passed some courses on the promise never to take that class again. She was what we called a squeaker in the trade. She worked as a fitness trainer, typically a low paying job. I encouraged and supported her to go back to night school and upgrade. She then went to college (I am in Canada and colleges are vocational or certificate institutions) and get a career. She graduated and earns as much and potentially more than me.
While we were married, kids supported her sports, hobbies,and interests. She worked part time and was able to fritter the time away. Yet I was, as she claimed, keeping her under my thumb. When I asked exactly how, she responded that I just did and stormed off. The funny thing is that I was considered the best SIL in the family. One of her sisters told her after the A came to light, that she was an idiot and the sister would have left her own husband for me.
I've distilled all of this and more, and come to the dime conclusion that my STBXWW needs to vilify me in order to live with herself. To face who she really is, would presuppose that she would take one of two next steps, fix herself or destroy herself. She does not have the strength for the former and is too proud for the latter. So what remains is living in an Orwellian world of doublethink, where things are constantly rewritten and contrary ideas sent down the memory hole. I wish she had the strength to grow, but I have never seen her do it in all the years I've known her. Yes, she has done things, but only if other people got her moving. She has a laziness of spirit which has kept her stagnant all her life.
As I hinted before, there is one area that she has focused on. She feels that I kept her under my thumb. It took a lot if IC and MC to see this. When we married, she married up in her mind. She told herself that she could not believe she had gotten a guy like me. After a while, she looked down at me because I did not meet her physical ideal. She liked fitness guys. I was an artist and working on a Lit/Hist degree. She wore spandex, I dressed like i stepped off the set of Paperchase. So she increasingly saw me with contempt. This coupled with my growth and people telling her how amazing I was and how lucky she was to have me, just incensed her. She hated us spending time with my sister as she said that she could not understand what we were talking about and always felt stupid. And so on and so on.
Her solution was elegant in its simplicity, find someone who would make her feel like the alpha in the room. The next step was to secretly humiliate me in a form of primate dominance ritual by paradise g me in front of her AP, some times with my kids. She was even going to go so far as have him attend my birthday party in my house. Friends that knew of the A put a stop to this. I guess some things are simply too much for even her friends.
So in the end, she is faced with resolving al of this and more, or adopting a much simpler position which positions her as the real victim of this tragedy. I was an abusive husband who kept her under my thumb and as such, pushed her into the arms of a drifter cowboy to find the love and acceptance she never got with me. He fawned over her as being way out of his league, actually most bipeds are, and she was suddenly the alpha. You can only imagine how she felt when she discovered that she was only one of several of his side pieces. He was, as it turned out, a petri dish in a cowboy hat.
I think the revision functions as a default survival mechanism for the WS who wants the path of least resistance, a sort of psychological crash diet, rather than doing the hard work to engender real, authentic changes.