The God Makers - Sisters of the Storm, #5

The problem with trying to trap the Death Queens is you run the risk of succeeding. Over a year ago, Aleena Kurrin, divinely gifted warrior, and her adoptive sister, Baezha Ambrose, divinely gifted sorceress, faced the unnatural monsters of the Shingora - the Eighth Hell. The sisters triumphed, but their victory felt hollow, their souls scarred by guilt - though they saved many people, they failed others, something for which they cannot forgive themselves.
Making things worse is the fact that the mysterious alchemists responsible for creating those monsters remain unknown. or do they?A group of alchemists calling themselves the God Makers has set up shop just outside the alchemists' guild's jurisdiction, and they sound exactly like those who created the abominations on the Shingora. Haunted by their failures on the Shingora, the sisters must know for certain if the God Makers are who they fear, and if so, put them out of business.
Permanently. But when they get to the God Makers' lair, they discover their fears fell short of reality. The God Makers' master, Arleth, means to show the world just what they're capable of, threatening a city and the sisters' loved ones in the process. And the sisters would make an invaluable addition to his ranks. whether they want to or not. To save their loved ones and a city of innocent people, the sisters chosen by the gods clash with those who would create gods, all while trying to accomplish the most difficult task of all - forgiving themselves.