Y/N is a vampire. Her family is one of the oldest and one of the very few vampire families in the wizarding world. But because of how “dangerous” they’re portrayed, her father has limited access to some ministry positions. And because of this prejudice, vampires (like Y/N) are banned from certain shops too. She does however need to drink blood at least once a month, since the synthetic blood potions and blood pops don’t work in the long term. Dumbledore knows this, so he’s allowed her to go to the Forbidden forest to feed on small mammals.