Your daughter's situation sounds like mine. I'm always hungry, have gas and abdominal pain since I was in elementary school. I'm 64 now. My GI doctor told me (after a colonoscopy 4 years ago) that I have a redundant colon (it's too long so it forms kinks to fit into my abdomen). A lot of people have this without problems, so GI docs often don't tell their patients about it after a colonoscopy. I went to a different GI doctor and he did my fifth colonoscopy and told me about having a redundant colon. I take dicyclomine so that the colon doesn't spasm as it tries to get feces through the kinks. Has your daughter's GI doctor who did her colonoscopy mentioned a redundant (also called a tortuous colon)? It may be worth asking. It doesn't matter what I eat, even if I guzzle water I have lots of pain from spasms. Good luck!