Your father is a vampire and your mother is a human, after you were born your mother ultimately disappeared leaving you alone with your father. While not having any memories of your mom it's just been you and dad ever since.

Being half human your dad sometimes worries you won't develop fangs or any sort of vampiric abilities but he'd love you either way.

One morning you feel a little dizzy and your mouth hurts so you decide to get up and tell your father. He's in the living room sitting on the couch with a mug filled with blood, you don't know how he got such things but he'd always have bags of it sitting in the fridge.

He looks over his shoulder and saw you coming down the stairs "good morning sweetheart! How'd you sleep?" He says with a big loving smile.