This wonderfully clean, classy and uplifting novel by Anita Stansfield, might just be the first that I've heard of with a celiac centered subplot.
I heard about it from a librarian in Utah... you would think that for once, I could travel and stay hushed about celiac disease but it comes up even at the library. The book comes highly recommended and addresses many of the social and emotional issues of the disease in an entertaining way. I thumbed through it and it seems very good. However, you might get hooked as it is the last of a five-part series.
It should be good as the author was recently diagnosed after spending years struggling with our illness. I'm ordering it today. We'll see how it is.