Flight of shadows a novel

"In a future world where the fundamentalist government distorts true Christianity, a winged girl named Caitlyn escapes to the Outside but soon finds herself on the run again from an organization seeking her body's genetic information."@en
"Her genetic secret could change humanity forever. Her DNA grants her the ultimate power. But all she wants is to disappear. Booming buildings rise into the sky of a near-future America, shadowing the desperate poverty of the soovie parks, death doctors, and fear bombs. In this world of walled cities, where status matters most, Caitlyn Brown is desperate to remain invisible, wrongly believing what she needs to hide is the deformity on her back ..."@en