Glass Wings by Elle Kaelee

Pain erupted from Hadley’s shoulders, blood, deep and blue streaked down her back. A metal chain groaned around her ankle, the only sound besides her screams in the dark.

Eighteen and alone in California, Hadley turns to selling the only thing she has left to make ends meet: herself. When strange things start happening, Hadley has nowhere to turn. She will soon learn that there are worse things than humans watching her from the shadows.
Hadley’s existence is an anomaly. She has inherited an ancient feud between immortals both good and evil. With it, powers she can’t yet control. Her path extends back centuries, tying her to five winged immortals: a gentle soul burdened with destructive abilities, twins whose connection to the moon ties them to fate, a woman whose commands shape destinies, and a boy who wanders the realm of unconsciousness.
She will soon learn what they’ve all known for ages: even divine beings aren’t immune to family drama. When the light and the dark prepare for war, only you can decide which side you fall on—and it might not be as clear as you think.