Winged Spirits Series by Beka Westrup

For years, Sia’s hidden herself in the gnashing forest, dodging her father’s bounty hunters and ignoring the nameless magic in her veins. When she receives a letter from an estranged lover, she returns to the coast she used to call home, within reach of her father’s magical city hovering above the smog and the arranged marriage waiting for her... moreFor years, Sia’s hidden herself in the gnashing forest, dodging her father’s bounty hunters and ignoring the nameless magic in her veins. When she receives a letter from an estranged lover, she returns to the coast she used to call home, within reach of her father’s magical city hovering above the smog and the arranged marriage waiting for her. This place is not somewhere Sia wishes to linger—the land is noxious and filled with rebels, witches, and other humans who become walking corpses when they die. What was intended to be a brief visit turns into a death-bed promise anchoring Sia to Gwaith House for the foreseeable future. She agrees to look after her first love’s human child until her widower proves he can care for his daughter himself. The thing with promises Sia can’t break them. No seraph can. At least, not without severe consequences. While navigating the complex feelings she develops for the angry widower and her own grief, Sia becomes entangled in a mysterious string of dismembered corpses roaming the smog and a strange detective who refuses to leave her alone. As the desperate undead draw closer and closer to the child she is sworn to protect, Sia races to find the murderer responsible for creating them. She needs to figure it out quickly, or she may risk falling right back into her father’s scorching hands. less

Sia has returned to her father's floating city, and now she must face the promise and arranged marriage she's been running from for the last several years. She can no longer hide from her magic or from the seraph she's been bound to. However, the crown prince, Alezandral, has no interest in forcing her into an unwanted marriage... moreSia has returned to her father's floating city, and now she must face the promise and arranged marriage she's been running from for the last several years. She can no longer hide from her magic or from the seraph she's been bound to. However, the crown prince, Alezandral, has no interest in forcing her into an unwanted marriage. So they strike a he'll help her search for the answers she so desperately needs, and she'll help him fool his country about the legitimacy of their engagement until they can find a way to break the heart bond tying them together. But these tasks may prove more difficult than they anticipated. There's an army of sutilis bearing down on their continent, seraphim are going missing, and the closer Sia gets to the truth, the more she learns about the powerful male who owns her heart—and the stronger their bond becomes. less