Easy Now.....You mean to tell me nobody here ever did anything wrong like cheating on a math test. How about progressive punishment. If this was the first time, have a talk with here and a mild punishment, with the understanding if it happens again the punishment will become more severe. If you blast the kid out of the water on the first mistake, whats left if it happens again? firing squad? Kids do stupid things, hell, adults do stupid things, make here aware her behavior will not be tollerated and there are consequences for your actions.