Follow the Bloodshed (The Executioner Trilogy #3) by Kindra Sowder
Robin had gone toe-to-toe with Lilith, losing everything. Now she is back in the explosive final chapter of the Executioner Trilogy for revenge. After emerging from Hell, lying in her cold and dark grave, she is thrust into a world that she would’ve never thought possible; filled with creatures she never imagined. And her power is growing. Los Angeles is a ghost town, with the world following close behind. It is up to her to stop Lilith and bring humanity back from the brink of extinction.