We were laughing as she read it because it seems so funny on paper, but in reality it is a perfect and concise letter. I think she should just bring it with her everywhere she goes indefinitely. Including giving it to friends and family members that may want to cook for her. It is definitely a good reminder of how serious Celiacs really is.
So remember kids, gluten doesn't just hurt people in English, it is equally dangerous in Spanish as well...probably even German. Not Japanese though. They just eat rice and sharks and puffer fish. That's probably not true. Sharks could be filled with gluten for all I know.
Be jealous. Be very jealous.