Okay, here's an updated version of the query. I think it's better. It comes closer to actually describing the book than the previous versions of the query did. And I swear this is the last version I'll post!
Analefa Miradwen has spent the last ten years avoiding vampires and the city guard. She's not happy to learn she's attracted the attention of both, though, when a vampire mage named Magnus tries to abduct her. Magnus wants Ana's blood for its rare magic-enhancing properties, while the king's enforcer, Vincent Ondarr, wants to lock Ana in the Tower of Justice for her own protection.
Vincent suspects Magnus is trying to assassinate the king. With Ana's blood, he could do that and more. But when Vincent starts asking questions about Ana's parentage and brings in a werewolf to sniff out her secret, that her mother wasn't a human but a werepanther, Ana wonders if
Vincent's interest in her goes beyond simple protection.
Then Ana meets Rafael, leader of a group of amateur mages agitating for half-breed rights. Rafael's enthusiasm is exciting, but one of his group members may have a connection to Magnus. If she's going to stay out of Magnus's clutches, Ana needs to decide who she can trust.