What does someone with a gluten / wheat / soy /dairy allergy eat?

Ignore "Common Tater"s Remarks. Nobody "Fakes" an allergy when they can enjoy "Real Food that "Real People" can eat. Trust me, we MISS the Food That others can eat. Tell her that you don't want her to have any allergic reactions under your care, and that you would like to know what it is you can make for her, that won't cause her to become ill. You can be safe with Grilled Chicken, Meats, vegetables, (No Butter, just Olive oil, and salt) Fruit, Stay away from anything that is a "Bread", or made with "Flour". Boiled Eggs, or Poached Eggs for Breakfast, Cereal (Rice Crispies should be fine) Check the back of the box. Perhaps Corn Flakes (I haven't memorized the ingredients. You may want to take her Food shopping with you when she gets there, and have her help you out. Dealing with food allergies is a very complicated thing. I have 30 Pages worth myself, and I am ready to pull my hair out! So don't go crazy, ask her for help. :)

Look up vegan and raw food diet.

Where did you get the idea that she was? Not to judge anybody, but if she told this to you, it may just be that she's giving you a list of foods she doesn't like to eat. You should get some kind of verification that she has these allergies. If she doesn't, then once she learns how to press your buttons, she'll have the upper hand over you.