The incident involving Van had been covered up and it was obvious why. Roland didn't want people to find out that they had allowed one of their students to die in the academy. Lucky for the academy, the student was just some girl from a poor village but if someone like Van had died instead, then the academy would be heavily criticized for allowing such an incident to happen.
So the next best thing to do, was to pretend that it had never happened.
The sad part was Ray was hoping after finding out what happened to Amy, he would be able to use this information to somehow bring Gary back over to his side. If the shadow was behind everything then just maybe it would rationalize Gary's thoughts. Snap him out of being in control.
But with the information he had now, it would only make Gary hate Roland even more.