Now that Destiny was safe, and far away from the tree as possible, she could answer Professor Truebridge's question. 'The day Snape died, Harry Potter finds out that Snape was loyal to Dumbledore and not Voldemort. I guess Snape knowing the Whomping Willow led to the Shrieking Shack made it easier for him to hide the Sword of Gryffindor. He left the school grounds unnoticed.' Right? Right.