hmcAsWas*
Is she basically overpowering (and not very good at understanding boundaries) but well meaning? From your backstory - that does sound difficult to deal with
Nail on the head. Five hours of "go on have a drink" ,"why don't you drink," "we'll find something you like", "just a drop won't hurt", "How about tequila", "Rum?",. "Ooh we've got some Ouzo". It became a battle of wills.
Then we got onto the chocolate. I love it but can't eat too much.
Saying 'no' wasn't enough so when I eventually explained that if I ate too much it gave me eczema , she said, and I quote, "Go on, have a rash for me."
She asked if I wanted sugar on my strawberries I said "no thanks" she insisted I said, "really no thanks" the strawberries arrived covered in sugar.
It was more like Wellington v Napoleon than Xmas dinner.