This is a prequel to KNIGHT OF GHOSTS AND SHADOWS and SUMMONED TO TOURNEY.
Kayla was one tough cookie. A runaway herself, she looked after other runaways and made sure they didn't get into more trouble than they had to. Then trouble came looking for her.
When one of her friends gets gunned down by an armed robber, her latent healing powers come to the fore. Kayla healed her friend--and thene gang member who shot him. But now the gangs know about her--and want her power for their own--and ONLY their own, and if they can't have her, they will make sure no one else can have her, either.
But the emergence of this trememdous power wasn't noticed by just the mortal denizens of los Angeles. Soon, it's not only the gangs who are after her, but also an ancient unnameable abomination lurking in a warehouse, plus evil elves from another world--and one human woman who just might save her, if only Kayla can learn to stop running. . .