Rise from the Flames by Ginna Moran

No one told me what happens to angels who leave Heaven to fight demons in the mortal world. I knew such a mission wouldn’t be easy, but I had no idea that Hell would soon be singing my name.
Because to fight in humanity’s honor, an angel must abandon Heaven and their good grace. Or in my case, be lied to and cast out of paradise.
I still can’t wrap my mind around it. How can I protect humanity with broken wings and without my angelic power? I can’t. I almost fell into Hell the moment I hit the ground. It takes a deal with a rogue demon and some divine intervention from two infuriatingly righteous demon hunters to find my new path in eternity. But I won’t give up my mission. I don’t need to be an angel to fight for humanity’s sake.
If only Hell didn’t try to lure me into its depths. If I can’t resist the call, I risk starting the end of times. Humanity will face annihilation. And worse, I could be the reason for Hell’s rise.