The Wrap-Up List by Steven Arntson

 Gabriela opens her mailbox to find her Death Letter.  She has exactly seven days before she's due to depart.  Seven days to figure out her death's secret weakness, because if she can do that, she can earn herself a pardon.
  Steven Arntson opens up a weird world in which a percentage of the population is chosen for departure.  There's still the unexplained, unexpected and natural deaths of this realm, but with a little extra.  Deaths walk freely and visibly within this world, often hanging out at local coffee shops.
  In addition to the fantasy element there is impending war and a draft, familial problems and struggles with love and friendship.  The premise of the book made it intriguing and the background stories kept it moving.  All in all, a pretty solid read for fans of fantasy and the paranormal.