"Just got asked for the D. W says she has caught me lying about a past PA, and that all trust is gone. Seems as if she has spent the last week trying to justify her decision to go for the D."
This is where I got the impression that your were implying that she was digging stuff up.
You still didn't answer the question as to why and for how long you had cheated on her. It's important because women don't usually forget something like that. Not only that, but you say that you didn't treat her right and this is probably after you had the A. So if you had an A and you didn't treat her right after, why should she trust you now?
That's what's probably running in her head. The OM is just a band-aid. Dig deeper to find out the real reason she's leaving.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.