We are conditioned to question ourselves every step of the way - I totally get it.
I've mentioned this before - somehow it was my fault the dog puked (I wasn't even home), that traffic was bad, that it was too hot/cold outside, etc.
Since the A believes they are perfect and do nothing wrong - who is left to take the fall? Us.
That's why when I have a question about something, I email AW at work and ask, and then I have a response in black-and-white. Saved my arse numerous times. Sad that we have to end up that way, but it's self-preservation.