The Calling - Ashlynn Breyer, #1

In the shadowed heart of Detroit, where the veil between our world and the supernatural grows thin, an ancient evil stirs. Amidst the decay of once-great industries and the echoes of Motown's lingering melodies, malevolent forces converge, threatening to unleash chaos upon the world. Enter Ashlynn Breyer, a devout Catholic school teacher, whose unshakeable faith and dedication to her students serve as the only light in her otherwise mundane life.
Unbeknownst to Ashlynn, her destiny is intricately woven with the fate of the city she calls home. When a series of inexplicable events and tragic circumstances thrust her into the heart of the supernatural storm enveloping Detroit, Ashlynn must confront the reality that her faith and courage might be one of humanity's last bastions against an onslaught of darkness.