Hi! Good evening. I am Dr Shareef answering your query. As most of the warranted investigations have already come out to be normal, the pain could possibly be due to hormonal effects, and she might be in the way of attaining menarchae, if not yet so. I would suggest you to keep this possibility in mind and counsel her accordingly. If the pain increases or persists, I would advise you to get her clinically examined by a gynaecologist/general surgeon in your area. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. Wishing you an early recovery. Dr Shareef.