"Listen, I know it bothers you that I'm here to watch over you, but it's to dangerous for you to be alone right now. Bruce gave me the order to be your guardian and protect yiu since the Joker escaped Arkham." His tone was serious. A few days ago there was an escape from Arkham and the it was the Joker who escaped. Since your his daughter the Joker could be after you. So Dick needs to protect you, even if you hate him. "I promise not to bother you, I only need to watch over you."