Waywards - Do you really not recall?

For wayward partners, when your BS asks you questions and details about the affairs, including what you did and said with your AP, do you really have a hard time remembering the things you said or did?

My WW keeps telling me that she has done her very best to recall every single thing she said and did with her AP, but there are a lot of things that she threw to the back of her mind and couldn’t recall anymore because she had so much guilt and shame that she didn’t want to think about it anymore. The affair took place in Oct and Nov last year, so just 2-3 months ago only.

Is it really so easy to forget the things you said or did?