I don't know if anyone read any of Richelle's book. They're pretty good. She has a young adult series, the Vampire Academy series. That is about a half-human/half-vampire named Rose that tries to protect her best friend Lissa who is a mortal vampire princess when they are forced to return to St. Vladimir's Academy. Richelle also have another series, the Georgina Kincaid series about a succubus.