Dear C.,
Your daughter could absolutely be allergic to dairy, and it sounds like she is. Try removing all dairy from her diet immediately, and give it about two weeks to see how she is.
I am a grandmother, and have had health problems all my life. My grandson was diagnosed with a severe allergy to dairy when he was an infant. Just last year, I began seeing an Integrative M.D. who removed all diary and wheat from my diet, and all of my former problems have vanished completely.
Bovine dairy is not even close to being natural to the human body, and it is one of the top food allergies, usually going undiagnosed.
You can find wonderful dairy alternatives ~ Stonyfield farms (available in just abut all grocery stores) yogurt is extremely tasty, and my grandson loves it.
Here's their web site: http://www.stonyfield.com/AboutUs/MoosReleases_Display.cf...
There's a lot of hidden dairy in foods. Look for casein and whey on labels. They are both dairy ingredients and can cause problems. Read labels closely.
Good luck!
If you need additional information about avoiding diary, I'll be glad to send you some suggestions. Just send me a private message, and I'll reply ASAP.
Also ~ I see you're in the Columbus area. If you're interested in seeing a wonderful Integrative M.D. who uses traditional and alternative medicine, mine is great. She began her career as a pediatrician, and her treatment worked so well for her young patients, she began seeing their parents too. Now she has a family practice. She's the one whose advice changed my life for the better. She's in the phone book: Sandra Pinkham M.D.