To the OP, 4MyDaughter, I would recommend having your daughter abstain from foods with high sugar content. Sugar is the most inflammatory food. So, very little sugar or fruit if any, limit fiber, as it can act like a brush against your intestines.
White basmati rice, sourdough bread, cream of rice (or wheat), home made soups or broths, stay away from sulfuric foods like onion or garlic, which may cause excess gas, leafy greens if she can tolerate. Otherwise. If she can't get veggies down, I recommend this juice drink.
www.lakewoodjuices.com/product_detail/id-40/. This lasts me a while and tastes good.