The Little Women Letters, by Gabrielle Donnelly. 3 adult sisters; the 2 eldest tend to tease/make fun of the youngest throughout the book. The youngest has an ana reaction most likely to shellfish. One character does not understand the seriousness as his allergy is just a few hives, "it's not serious, it's just an allergic reaction." One sister with a degree in biochem understands and explains the near death experience. The downsides of the story line: no mention of needing epis, just "avoid" shellfish and the biggie is that the two older sisters tease the younger saying, in jest, that now they now how to kill her when the sa sister annoys them.