In both The Book of Blood and Shadow and in Blood Magic, the heroine's father teaches Latin. Coincidentally, in both books, the father is also mostly absent from the book. Well, in Blood Magic, he's dead, while in The Book of Blood and Shadow, he just doesn't play much of a role in the action.
At this rate, I'm going to have to make a YA Books with 'Blood' in the Title list. Yeesh.