Glory by Devin O’Branagan
(mine is the first edition cover, shown here)
This book debuted at the time of the Twighlight phenomenon. The cover is white to contrast against all the black covers for vampire stories.
Seventeen-year-old Glory Templeton’s blood holds the cure for a deadly pandemic-plague and she embarks on a quest to save humanity. When evil forces conspire to stop her, three supernatural beings are assigned to be her guardians. Forbidden love, mysterious companions, ancient secret societies, vampires, witches, and angels all contribute to the high adventure that tests the character of this remarkable young woman. The legend of Glory begins!