I recently re-read a lot of the Vampire Chronicles books. What i find particularly fascinating about them is how the characters deal with relationships and how the author portrays love, this is especially apparent in "Blackwood Farm" i can't help but find myself envying the characters (even though they're Undead and seriously twisted) because of their views on love, that and Quinn is such a Dear.
As for Gabrielle De Lioncourt, yes, she appears cold and unfeeling and has little sympathy for others, but i believe this has more to do with her growing up and living in a patriarchal society for many years, where women were treated as objects or children, basically, she's a rebel.