The Invocations by Krystal Sutherland

From the author of New York Times bestseller House of Hollow comes a darkly seductive witchy thriller where, though both men and demons lurk in shadows, girls refuse to go quietly into the night.
Zara Jones believes in magic because the alternative is too painful to bear—that her sister was murdered by a serial killer and there is precisely nothing she can do to change it. If there’s anything Zara cannot stand it's feeling powerless, so she decides she will do whatever it takes—even if that means partaking in the occult—to bring her sister back from the dead.