The Book of Ivy

http://hip1.sjvls.org/ipac20/ipac.jsp?session=1417C666FA942.23644&menu=search&aspect=subtab255&npp=20&ipp=20&spp=100&profile=thq&ri=&term=&index=.GW&x=0&y=0&aspect=subtab255&term=The+Book+of+Ivy&index=.TW&term=Engel&index=.AW&term=&index=.SW&term=&index=.NW&term=&index=.SE&term=&index=.STW&term=&index=.EW&sort=The Book of Ivy by Amy Engel

In an apocalyptic future where girls from the losing faction are forcibly married to boys of the winning faction, sixteen-year-old Ivy is tasked to kill her fiance Bishop, although when she finally meets him, he is not the monster she has been led to believe.