Queen Mab by Emily McBride

Madeleine, a promising grad student, is newly married when her baby daughter Maud arrives perfect - despite a traumatic labour. But just a few nights into their life, something seems amiss. Maud never stops crying. Her hunger is insatiable. Her eyes glint with a kind of ancient mischief. Could Maud be a fairy child, swapped when she wasn't paying attention? Is her real daughter elsewhere, dancing in the half-light with sprites and foxes? As her husband Tom continues with his day-to-day, working toward a promotion, Madeleine slips further into violent visions. Panicked at her lack of maternal love and shut out from her old life, she turns to what she knows best, literature, for answers.