Anna and Jo have been best friends since they were young, despite the obvious class differences between Moroi Princess Annael Milton and Dhampir guardian-in-training Joanna Beth Harvelle. However, these two are closer than most -- After a catastrophic car crash that killed Anna's family, leaving her the last surviving member of the Milton family, Jo was badly hurt. Anna healed her with Spirit magic that she didn't understand, essentially bringing her friend back to life and creating a Spirit Bond between them: Jo is always aware of what Anna is feeling, and can sometimes unwittingly eavesdrop on the pretty red-head's thoughts.

I'd love to see something like where the books start, with the two of them having run away and Anna having to feed on Jo so as not to attract suspicion, but you can really play with anything <3

If you haven't read the books, but want to fill this prompt anyways, here's an explanation of the two types of vampires --
-Moroi are full vampires -- sensitive to the sun, they need to drink blood, and they have magic of one of the elements(Earth, Water, Fire, or Air. Spirit is much more rare than the other four)
-Dhamirs are crossbreeds, either between a Moroi and a human, or a Moroi and another Dhampir. They're basically humans with some extra agility and strength.