A.D.
Hi! Have they tested for inflammatory bowel disease? My son had similar symptoms for months, then was finally (recently) diagnosed with Crohn's disease. While it's not great news (it's chronic), at least it's an answer and it's treatable... He's on medication and feeling much better. So, if all the other tests come back negative, have her doctor test for inflammatory bowel disease (colitis or Crohn's). Good luck with everything!