Edge of Darkness. Darkness Eternal, #3

Final book in the series! Aniesa has gone out of the frying pan and into the fire. If by fire you're thinking hell. You'd be right. Aniesa, who just turned eighteen is a Veil Witch. She's been training with the Sisterhood all her life. Her mother is a high-ranking Veil Witch. Once long ago, her mother met a fallen angel-AKA demon. The Veil Witches are forbidden from consorting with fallen angels. But her mother did.
And nine months later, had a baby girl-Aniesa. Aniesa learned on her 18th birthday that her father was a fallen angel. Her mother won't tell his name. And no one else knows that Aniesa is half-angel, though fallen angel. Aniesa is walked the fine line between legal and illegal activities when she tried to help a half-demon smokeshow named Calyx with a problem. A massive problem, it would seem. Now she's stuck between a rock and a hard place.
Or is that Dire Island and Darkness.