"Well, I think if our lives are going to end up being dull and traditional later, we should have a bit of fun now," Bellatrix told her. "Really, Cissa. I worry about you. You always go by the rules without thinking once of yourself. Even if I did slip up, Mum and Dad don't need to know. No one does. It can be our little secret."
Bellatrix gave her sister a condescending grin. "What they don't know won't hurt them, Cissa."