I'm not really answering your question--I don't have any recipes to share--so forgive me. I just wanted to say that people with food allergies do not necessarily need special recipes, only substitutions/modifications to foods they already love. I don't know where your friend lives, but I would really recommend going to a co-op (you don't need to be a member) or Whole Foods to shop for groceries. The 2 "natural food" aisles at Cub Foods doesn't cut it if you've got severe allergies, and what is there is overpriced.
Rice, hemp, and almond milks would be good substitutions, both to drink and in recipes. Tofu can be substituted for eggs, sour cream, and cheese in recipes. Corn tortillas and sourdough bread would be yeast-free (not sure on the gluten).
Good luck to your friend and her family.