In front of Snape at this point, she runs down the grassy slope towards the gates.

A shabby hut comes into view and something inside her reels into full blast. With her wand raised over her head, she twirls it swiftly and sets the hut into a burst of flames. Cackling and hollering out in a victorious battle cry, she jumps up and down. 

“I KILLED SIRIUS BLACK! DUMBLEDORE IS DEAD! THE DARK LORD WILL RISE AGAIN!” She causes the flames to rise a hundred feet into the air with the slight tilt of her wand. The firelight dances in her malicious eyes.