RedactedNarrative: Operator stated the two occupants fell off the rear of the PWC when he accelerated from an idle position.  Operator stated when he turned to pick them up he noticed blood on victim coming from the thigh/groin area.  father transported her by vessel to Dutch Island community dock where she was relayed to an ambulance then transported to Memorial Medical Center in Savannah.  The injury to Victim was diagnosed as a vaginal tear possibly due to impact with the water.  Doctors' were unable to determine the direct cause of the injury.  The injury required surgery and stitches.