Definitely Dead - Charlaine Harris

Sookie doesn't have that many relations, so she hated to lose one - but of all the people to go, she didn't expect it to be her cousin Hadley, a consort of New Orleans' vampire queen - after all, Hadley was technically already dead. But she is gone, beyond recall, and she's left Sookie an inheritance - one that comes with a bit of a risk - not least because someone doesn't want Sookie digging too deep into Hadley's past - or her possessions. Sookie's life is once again on the line, and this time the suspects range from the rogue werewolves who have rejected Sookie as a friend of the pack to her first love, the vampire Bill. Sookie's got a lot to do if she's going to keep herself alive...