A Method to the Madness

Lennox Kingsleigh, a sixth year in Slytherin, gets selected to compete in the Triwizard Tournament (instead of Cedric Diggory). Severus Snape is chosen to be her mentor and guide to make sure she survives the tournament, but there's more to her and her past than he knows about. The age to compete is changed to 16 instead of 17 to suit my needs! And anyone can put anyone's name in!