"Who's that?" her friend asked.
Betty named him, and in a voice genuinely unconcerned.
"How long have you known him?"
"I knew him for a week last Spring: he gave me a few lessons. He is a great favourite of my aunt's, but we don't know him much. And I thought he was in Vienna."
"Does he know where you are?"
"No."
"Then mind he doesn't."
"Why?"
"Because when girls are living alone they can't be too careful. Remember you're the person that's responsible for Betty Desmond now. You haven't your aunt and your father to take care of you."
"I've got you," said Betty affectionately.