Why?

(Rated yellow due to the the content in the prologue) A year ago thirteen year old, Hayden Barrett went missing and was found having been tortured in the basement of an abandoned house. Now a year on, Hayden, whose still in severe shock, and her family are trying to work out how she survived being tortured by a crazed maniac with ergot poisoning. What will happen when she gets an unexpected visit from Hogwarts headmaster Professor Dumbledore?
(Note): Thanks to ATarnishedSoul for the amazing cover!