Damage control
In the end, the damage done to the sculpture cost over a thousand dollars the hotel paid it all. They just wanted this to be done with so that they could move on. Okay, so they didn’t get to find the girls who did it, but their images are now online and were on television, so they must have panicked.
Maybe the possibility of getting caught struck some fear into them and made them better people. After all, some people just need a good scare to keep them from getting into more trouble oftentimes, teenagers just do silly things as a form of experimentation. We hope that is what happened at least.