Sovereign by E.R. Arroyo
Chemical warfare has obliterated most of the world, including America, and the survivors have turned into feral beasts, save one colony, Antius, the last remnant of civilization. Seventeen-year-old Cori (aka Citizen 1206) only longs for wide open spaces and freedom. But Antius has no use for such things, just mindless drones to serve in a place with walls, fences, and laws. A lot of laws, which Cori constantly breaks. So she’s spent years plotting her escape, which is the only thing that will save her from the colony’s deranged leader, Nathan. She isn’t looking to be a hero, and she certainly isn’t looking to fall in love, but she just might do both.