Magic and Murder Among the Dwarves - Crying Woman Mysteries, #1

Supernatural evil. Tragic romance. A psychic investigator. The widow Amanda Knight settles in the Blue Ridge Mountains to quietly grieve and rebuild a normal life. But her cantankerous neighbors, dwarves who come above ground only after dark, demand that she use her psychic power to solve a gruesome murder for them. To catch the brutal and clever killer, Amanda turns for help to Tristan, an expert in dwarves.
She is drawn to him but is still bruised by the recent death of her soldier husband. Then the dark side of Amanda's power turns against her, and she is haunted by an evil presence more sadistic and cunning than any murderer. Amanda must tame her fears if she is to outwit the killer and conquer the immortal enemy inside her. And if she loses, death is no longer the worst thing that can happen to her.