dumped/fell overboard...i assume they arrive at 8 weeks re tissue degredation on the pelvis/femur..but it really is a non-sensical statement to make unless there is other unreported information. RIP.
YOU must take your daughter (a minor) to the Police and make a formal complaint..then urge them to follow it up immediately with the school..if you don't get prompt action, then go to a lawyer.
you didn't mention under the arms, down the flank, across the small of the back, in the hair-line, between the fingers and toes, groin area. Once the body is opened the liver is quite bright as are the lungs and brain.