The Vampire in the High Castle — Chanel Smith

When Julia Agrippina asks Veronica to deliver two teenage vampires to a castle stronghold, she figures it should be a straightforward matter. But the teen boy has other ideas-he wants to reclaim his stolen birthright. His older sister has her own mind, too. Neither of these sheltered teen vampires has ever fed from the source. And since ready-to-drink blood is going to be scarce on this trip, Veronica must teach them how to hunt but not kill, and how to feed. However, when the danger heats up, Veronica may have to teach them how to kill after all.