This lesson reminded Selina of her childhood. Every question that Scabior asked was a sudden flash of her childhood when her father and mother told her stories of the Great War. Harry Potter's life as well as his companions was something of legend in the wizarding world and all magical children learned the tales.

So when he asked about the Chamber of Secrets and the diary that opened it, Selina's hand rose in the air, "Sir, the diary held a piece of Tom Riddle's soul in it, which manipulated Ginny Potter to open the Chamber of Secrets. The diary was hers, so every time she wrote in the piece of Tom Riddle would instruct her on things to do to open the Chamber." Kind of creepy actually.