Rewitched

"Belladonna Blackthorn hasn't lost her magical spark, precisely . . . but she hasn't seen it in a while either. Balancing work at her beloved Lunar Books with protecting it from her toxic boss, all the while concealing her witchcraft from the non-witches around her, Belle is burnt out. Perfecting the potential of her magic is the last thing on her mind. But when her thirtieth birthday brings a summons from her coven and a trial that tests her worthiness as a witch, Belle risks losing her magic forever. With only the month of October left to prove herself, and signs looming that dark forces may be working against her, Belle will need all the help she can get--from the women in her life, from an unlikely mentor figure and even from an infuriating coven watchman who's sworn to protect her . . "--