S.~
I am a health counselor and in my experience, there are five main foods that cause sensitivities. From reading your post it seems like you have a pretty good feeling it is dairy. Before eliminating dairy altogether you may want to try a rotation diet, beginning with dairy to be sure dairy is the culprit. To do a rotation diet with your daughter you will need to eliminate the biggest allergens-wheat, dairy, soy, corn and citrus. You take each one out one at a time for 7 days. After the seven days introduce the food back in. If the reintroduction of the food causes any new symptom or congestion you have your answer. If not, remove the next one and follow the same process. You may find several of the foods cause a reaction, which would mean she has an allergy/sensitivity to more than one. This is the best way to determine a food allergy and eliminates the guess factor. Often we try to determine food allergies by blood tests and skin testing. This process only considers one type of allergic reaction. The rotation diet works and there is never a false +/-.
I have a list of non-dairy foods that contain calcium that I could share with you. If you are interested just send me your email.
Good Luck,
J.
www.nourishingthepeasandthepod.com