One Bloody Fairytale

*AU* A beautiful couple living in a sprawling forest estate seems like a fairytale, except he's a vampire, she's a witch, and the property is cursed to keep trapped a creature who lurks in the shadows. Hermione might be able to free herself, but can she do it without releasing the most terrifying female vampire the world has ever known? [Thorfinn/Hermione] UPDATED SPORADICALLY