I know exactly how you feel. My daughter was diagnosed with diabetes last January, than in June, after a routine blood test she tested positive for celiac. I was/am very overwhelmed. Like your daughter she has not symptoms. We had our son tested, he is 6, and he tested positive also. He also has no symptoms. Both of my children have grown fine. I am so worried that my son may develop diabetes from untreated celiac that we have been following the diet for both of our children. It is getting a little easier, but I still wish it would end. I can say my daughters blood sugar control has improved, but I am not sure if that is because of the diet or just because we are better at figuring out her body over time.
I have found another site which is also filled with a TON of information. It is http://forums.delphiforums.com/celiac/start. I go on it a few times a day and learn about products, etc.