Redemptions Awakening (Feathers of Darkness Duet #2) by Sadie Winchester:
 
Death. It was meant to stop the voices. Bring salvation. It should have saved us all.

We were wrong.

Stitching together the broken pieces of my heart, I have a new fighting a battle between Heaven and Hell that will alter all our futures forever. War isn't coming; it's already here.

Aligning myself with unlikely allies against threats both old and new, nothing will taste sweeter than unleashing my fury on the demons of my past.

But will my newfound sanity and all the love filling my soul survive? Redemption comes at a cost. What will I sacrifice this time?

This book is intended for mature audiences 18+ years old. Please refer to the author's website for all content warnings.