Lily was gathering her stuff to get ready to move outside to learn the new charm when the teacher asked another question. Lily reopened her notebook to write down what the others in the class would say, since Lily had no idea how to answer the question. The only answer she could think of would be not casting the charm in the first place, but she couldn't answer that because that might lose her house points. She definitely didn't want to lose points in her first class. So instead Lily raised her hand and answered, "Could you stop the charm from working by using another spell?" Lily figured that that would be the obvious answer but she didn't have anything better.