If your child has a steady complaint about pain in the stomach, stop and take her serious and consider doing a 4 day intolerance test to these foods.
This means that you would remove any gluten foods from your child’s diet for 4 days. Monitor what happens in that time; closely. Then reintroduce gluten in some way back to her diet and see how she responds.
Children with Celiacs disease can greatly benefit from probiotics. It is the fastest way to put the stomach back into order. They are tasteless and can be put in a fruit shake or mixed in cold cereal. Do not put in anything hot or cook them at all but only in cold food and drink items. Check out Alive Probiotics