Harry goes Vampire hunting on Christmas day. Slight crossover with Blade. Oneshot

A young Dhampir (half vampire, half human) girl is taken in by Eric Brook who like her is a Dhampir and his friend Abraham a human whose family was killed by vampires, the two men are vampire hunters and raise Casey as one of them they are the only people she can trust, she soon learns that her mother was a witch who attended Hogwarts and now she has the case to follow her footstep