From the description:
"Lost in despair, Alexis teeters on the edge of an abyss, her lifeline of hope fraying into a thin thread. If it snaps, she'll plunge into complete darkness. With the help of her son and her writing, she's been able to hold on. Until now. Erratic impulses, disturbing delusions and her own demonic blood threaten her sanity. When she's forced to choose between hanging onto hope or letting go to serve her Amadis purposes, she faces a decision with inconceivable sacrifices.
Alexis runs to the one place she thinks will provide answers, only to find herself at the center of another battle of good versus evil, not only with the Daemoni, not only within herself...but also against the worst opponent imaginable. But even if she wins, what will she lose?"
4.5 stars from over 100 reviews, with less than 10% negative. 355 pages