Hi kgh,
I'm afraid I don't have enough knowledge to answer your question by myself. I will forward it along to a doctor who will hopefully be able to provide you with more information.
I did some research on laparoscopic surgery. The procedure will allow doctor's to look directly at the inside your daughter's abdomen. A tiny video camera inserted in the abdomen will allow the doctor to see if a problem exists that was not found on the other non-invasive tests that were performed.