you, to put things bluntly, are a dark Death Eater. You became a Death Eater to tell Albus everything. And since the battle of Hogwarts was close, Voldemort called Snape into the Shrieking Shack. You were using an invisibility cloak, in which you stole from Harry Potter, having snuck into the room and snuck behind Voldemort’s serpent, Nagini, slowly grabbing its tail and tying it around a pole that was out of reach of Snape. You felt like you had to.. you weren’t sure why yet.

Snape: “you have performed extraordinary magic with this wand, my lord, in the last few hours.” Voldemort (grandpa voice): “no, no. I am extraordinary but the wand resists me.” Snape: “there is no wand more powerful. Tonight when the boy comes, it will not fail you, I’m sure of it. It answers to you, and you only” Voldemort: “does it?“ Snape: “my lord?” Voldemort: “the wand, does it truly answer to me?” Voldemort walks around Snape Voldemort: “you’re a clever man, Severus. Surely You must know, where does it’s true loyalty lie?” Snape: “with you, of course, my lord.” Snape holds his hands behind his back Voldemort: “the elder wand can not serve me properly because I am not it’s true master. The elder wand belongs to the wizard who killed its last master. You killed Dumbledore, Severus. While you live, the elder wand cannot truly be mine. You’ve been a good and faithful servant, Severus, but only I can live forever.” Snape hesitated for a second Snape: “My lord I-“ Voldemort sliced Snapes neck, making him fall back. But it wasn’t enough to kill him, it wouldn’t have been Voldemort: “Nagini, kill.” Voldemort walked away as the serpent tried to jump out at Snape. But thanks to you, it couldn’t reach him