I feel your pain. I get severe migraine headaches and can't eat chocolate, and there is a family member who always gets me chocolate, even though she knows I can't eat it. And I LOVE chocolate so it's really difficult. I haven't decided whether it's a PA thing in my case, I go back and forth on that, but it sounds seriously PA in your case. Maybe you should just hand the chocolate back to her and say, "Thanks but I can't eat it. Why don't you keep it?" In my case, I open it, see it's chocolate, and say, "Well I can't have it but I guess the kids can have it." One year I just handed the present to my daughter and had her open it. I don't even care about it anymore, but I've stopped pretending to be excited. She doesn't seem to care if I like it or not anyway.