M in the Demon Realm by Mark William Hammond

Emma, a young Asian adoptee, struggles to make it in the New York City fashion world. She’s a waitress in K-town until the night she and her boyfriend are attacked by Wendigos, Native American flesh-eating demons. After she is brutally wounded by the monsters and her boyfriend torn to shreds. she learns her true family history is an ancient line of Chinese female demon killers. Now she must not only accept her destiny, but there’s a Hell Gate opening under City hall and she is the only one on earth who can stop it.