"No, I haven't forgotten, but she slipped some sort of subtle potion into the Butterbeer I drank, and before I realized it, she had cast silencing charms on the walls and door, and started laying out what she had noticed. All I did was confirm some of her observations. But she wasn't even aware of some of my more, shall we say, unpleasant doings; just the harmless stuff like what happened to Lockhart. I also had to give her a general idea of my goals; she forced the issue because she was concerned that whatever I was going to do, that it not harm the Black Family. I did not discuss anything about our Family, so our secrets are safe. It was after she determined that I was not going to cause any grief to the Black name, she swore her oath and volunteered to help me."