When I was a grad school, I had a part-time internship at a consulting firm. I went in a couple of days a week to find various numbers in annual reports and 10-Ks and plug them into spreadsheets, do PowerPoints, stuff like that.
One day I bought some peanut M&Ms and brought them back to the office, and I asked others there if they wanted any. One guy said he couldn't because he had a very serious peanut allergy. I apologized and asked him if I should put them away, and he just said, nah, it's fine.
These people who claim they're going to die if they so much as look at a peanut on an airplane - I have a really hard time believing that, I'm sorry.
EDIT: Forgot to ask - did the woman die, blow up like a balloon, go into anaphylactic shock, or suffer any other serious complication in flight? I'm guessing I know the answer, but still.