Thanks, Hope!
Ironically, she puts on the pseudo-stupid routine whenever anyone corrects her.
Bones
Dear Bones,
You're welcome!
Reading your last posts and thinking back to your previous mentions of this friend, I can really sense her anger toward...no, hatred of... her family.
Her plea to add celery to the heirloom potato salad sounds like a childish attempt to rewrite history... and very sad.
I feel so sorry for her and for her mother.
I wanted to say also, that I don't believe boundary invasions are always NPD behaviour, by any means... and that blank look of your friend sounds to me like an act of splitting - dissociating - which I've think implies something else going on with her... within her.
When I was a little girl, my matron aunt was always wanting to fix this or that on me, to tend to me, as I realize now, as she felt herself to have been neglected... and she could be very pushy and invasive. I think she identified so closely with me at that point, that she really thought we were the one in the same. Maybe that's what's happened on occasion with you and your friend... like at your graduation... she couldn't stand to see herself doing the things you were doing and was desperate to correct them/ you.
Anyhow, aunt lived with her mother, my grandma, all of her life, acting out her numerous resentments in a very passive-aggressive manner and consistently denying accountability, all the while defying her mother (and anyone close to her) in the most ridiculous ways. Grandma disliked clutter, so aunt would heap it in every corner of the common space they shared, especially catalogs, all around their little kitchen nook table, while she had a huge bedroom (my grandma's was a closet, in comparison) with a huge desk and floor space in which she could have kept these piles. But no - they had to be prominently displayed for the purpose of aggravating her mother. That's just one example of a kazillion.
She was always late, too. Always. And so very childish... would set her eyeglasses down in the middle of a stairway or give a young child in the family some treasured possession with which to play. All of this begged someone to say, "uhh... that's not wise", so that she could replay her "you can't make me grow up" routine. Toward the end of my grandma's life, aunt chose to get some vengeance by uncovering grandma's weaknesses in a very deliberate manner, speaking with relish of grandma's incontinence and other daily issues of a woman in her 90's.
It was really pitiful to see... and your friend reminds me of her.
Dunno whether that helps any, but just thought I'd share it

With love,
Hope