Rogue? That was a strange name, but not the strangest she'd ever heard. For a second she just gave the girl a blank look. Finally her lips twitch slightly into something that might have been considered a smile. "Thank you..." she quietly took the books from the girl. If it were nicer out she may say she didn't need help. Even at this moment she debated on claiming not to have needed any help. However, she knew it would be a lie. "I'm Elphaba."