She has also been asking "are you OK, I mean how are you really" and things like that. Offering hugs, etc.. She's essentially trying to convince herself of how big and loving she's being. I suspect she even believes it.
So manipulative. My W was so affectionate after BD. I think she was trying to make sure I was reeled in solidly as Plan B. I remember a few weeks in I even pointed out how affectionate she had been (because she had become completely unaffectionate) after BD. She said: "Well, I knew you were hurting."
I think you are right, it is a way of alleviating the guilt she is feeling. You seem like a pretty emotionally strong person, remember your strength!
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018