0P here! Just to clarify, when she said, I can't eat that, she absolutely meant for me to either change my menu or make her a completely separate meal. I've known her for 20 years, and this is not uncommon behavior. She is a very dear friend who has many many fabulous attributes, but whenever I have a party, she tends to want to dictate who I invite and what I serve. This is a very small part of her personality, and something that I am absolutely willing to put up with, because she is such a wonderful person in many other ways. on the other hand, I had the dinner party on Tuesday and she ate what everyone else ate. I took everyones advice, and when she brought it up again, and expressed concern about what would be served, I just kept my mouth shut and let her decide whether or not she wanted to come. And she did!