Not to veer off topic, but my adult child has Celiac Disease, and I am gluten intolerant. It is not that hard to shop for and cook gluten free food. You could serve a child a gluten free diet, and they wouldn't even know it.
I think Lauren is gluten intolerant, but not Celiac and not just gluten free for fun. I will be watching closely to see how she manages this in the Duggar chaos. I personally would bring my own food to every gathering.