Citadel

Citadel, the only city on the planet Edalide, has a holy mission: exterminate the demons from the Flooded Forest. The unholy, vicious animals were a mistake made by their god that must be corrected.
Or at least, that's what everyone's been told.
When Olivia, a nonverbal autistic nineteen-year-old, has a chance run-in with a "demon," she realizes that these beings are not vicious, animals, or unholy, but sentient people. Forever scarred by her mother's legally sanctioned murder, and determined to prevent either side from losing more loved ones, Olivia embarks on a hazardous journey into the Flooded Forest where she faces flesh-eating predators, telekinetic zealot-warriors, and the demons of her own past.
Olivia's quest for answers forces her to decide to either seek justice for both sides, or continue the cycle of war, revenge, and death.