Divine Awakening. The Divinities, #4

A mother's love is her greatest power. Divinity witch, Desiree Sanders has made a lot of bad choices in her life, but trusting the demoness, Samoan should earn her the award for traitor of the millennium. After several failed attempts to set things right, Desiree turns to the dark, sexy Death Demon, Lex for help saving her son and ending the war. There's no darker place than the soul of a demon. Divinity guardian, Alexander, AKA Lex, has hardened his heart and locked away emotions following the betrayal of his mate over three hundred years ago.
Until he meets the quiet and beautiful Desiree, and the walls around his heart start to crumble. When she calls him for help, broken and scared, he can't deny her, and the urge to claim her for his own becomes an overwhelming need. Trapped in the Underworld as the war between witches and demons escalates, Lex and Desiree must face their pasts and their fears-and open their hearts-if they are to find a way out.
Meanwhile, the Divinities in the natural world prepare for a battle that is no longer just dark versus light. If lost, it could mean the end of life as they know it.