It is useless to think of responsibilities alone unless they can be connected with our motivations for fulfilling them. Young girls love good behavior, so don't tell them over and over again, "Behave." What you have to do is make it in their interest and make them feel the value of good behavior, and they will like it .In addition, let them realize that they cannot control meanness and obscenity, and those who have no respect for virtue cannot respect his lover.