"Undiagnosed stomach pains"

My 10yr old daughter was admitted to hospital in October 2014 with what the Dr's said was appendicitis. She was examined by the surgeons who initially said it was and were going to remove them. They then decided it wasn't and they would not operate so discharged her. She was referred to a consultant who treated her for constipation but she was not constipated. The pains 'flare' up although they never recede completely. She has been in and out of hospital since October and each time they have said it isn't appendicitis although three GP's have said it is chronic appendicitis. The pain is in her right lower abdomen and flares when she walks, when in the car go over bumps and if she is jolted. She cannot lay on her right side and sleeps ( whenever she can) sitting up with her legs up. We believe she has 'chronic appendicitis' and are asking, 'why will the surgeons not remove them? ' her school work and attendance is suffering.