Undead and Unwed (Queen Betsy, book 1)
From the publisher:
First Betsy Taylor loses her job, then she’s killed in a car accident. But what really bites is that she can’t seem to stay dead. And now her new friends have the ridiculous idea that Betsy is the prophesied vampire queen, and they want her help in overthrowing the most obnoxious power-hungry vampire in five centuries.