Yes, I only know about the rather wicked prank that Cori pulled on Grace because Cori herself said something to me about it, and she was laughing and thought that it was hysterically funny to see the look on Grace's face and her reactions to that, and Cori was feeling so clever about having thought of doing that. Who would have thought of doing that or talking about that? And that was the only time that I ever heard about that particular event. Why did no one else ever mention this event to me, and perhaps other events connected to Cori before I had agreed to room with this psychotic person? But anyway it seems too late now to drop these worthless people off of my life.