And as Petunia died, the curse Tom Riddle had cast on the house was broken. The scene around them dissolved, leaving Hermione and Enola in the front garden of the ruined house again. They didn't even have to cast another spell. The building crumbled slowly before them, dissipating to ash and blowing away on the wind until there was nothing left but the overgrown garden that Harry had once tendered, and the flowers he had meticulously grown to keep himself sane.