A possible reaction to gluten

On Saturday hubby took the kids to lunch. They went to a Hawaiian restaurant and had rice with terriyaki chicken. That evening GFdaughter had bad stomach cramps. I think it may have been the terriyaki sauce on the chicken. I'm sure it was filled with flour/wheat in the soy sauce. He had forgotten about that possibility. It so easy to think of gluten items as being mostly bread a pasta and if you avoid those you will be fine. It's easy to forget that gluten is in so many other things. We will keep going with the elimination and test her in a few weeks so we can have accurate results. But I really do think she is gluten intolerant. She is feeling much better. Her stomach aches have stopped. She is eating a wider variety of foods. If we have bread in the house she will default to bread and eat nothing else. She is also eating more. She seems to be hungry a lot more. She has typically been a really small eater. Did I mention she is also our smallest child. Her younger sister of 2 1/2 years is the same size as her and wears the same size shoes. Now small does run in the family, but I do wonder if she just hasn't gotten the nutrition that she has needed.