'Harry Potter' author J.K. Rowling wrote a letter in the voice of Dumbledore to the 15 year old girl who survived the shooting massacre of her entire family in Houston, Texas. Cassidy Stay pretended to be dead during the incident that left her parents and four siblings dead. During the memorial service, she bravely quoted Dumbledore from the Harry Potter series. Rowling was moved by the story and decided to send her a special message.