I thank everyone for the advice so far.
We are headed to a pediatric doc of internal medicine (Tokie you may know him - Dr. McInturff, and yes, Blackfoot is a small town) for a second opinion and from there hope to be referred to a gastro doc.
DD is exhausted from dealing with the pain. We are too. Fortunately she has the advantage of being able to sleep in - we don't have that luxury and are EXHAUSTED.
I am going to run the cleanse idea by the doc tomorrow, following suggestions that all of you have offered. Also I will include suggestions for things to ask the doc that were offered.
Again, thanks and I will keep you posted.