Hi Jen2be2: I so sorry to hear about your daughter, and am assuming you've done some reading on idiopathic juvenile osteoporosis. Even though she has Celiac, there still could be some other secondary cause which would make it the idiopathic kind of bone loss, unless the Dr is completely convinced that the Celiac is the "only" cause. I would read as much about both kinds of juvenile osteo that I could get my hands on. I have a Dr in So CA that is the co-head of an osteoporosis research center that may be able to help your daughter. My Dr is a fantastic clinician, very intelligent and incredibly compassionate. I don't know where you live, and since we can't exchange that info, I would look into the Osteoporosis Clinic at Loma Linda, if you're in So CA, or the one at UCLA. If you live in Northern CA, check with a Univ Hospitals up there for a second opinion. If you do live in So CA, I can post the Drs name and address, if you are interested.
If you are happy with your daughter's care so far, then stay with the Dr you have now, but if you want to see a specialist in the field look towards the Univ Hospitals in your area with a osteoporosis dept or mineral metabolism dept.
I hope you find some answers and appropriate treatment for her. Good Luck and let us know how it's going. Take Care