Time capsule

Karen sawyer strives to be a detective one day, but for now she sticks to more simple problem solving . Just a few days ago her parents decided to send her away to boarding school due to her trouble making and their lack of interest towards her.

Karen is lucky because she arrives just in time for the schools time capsule opening.
The hall was filled with loud and energetic noises of excitement as student wait to unlock the capsule and it's mysteries.

The hall falls silent to the horror in front of them . Not one second passes and you could already hear the horrific screams of the poor girls.

Karen is in compleat and utter shock.
Could this possibly be a mystery ?