Bottling It by AA Albright

Wanda Wayfair is a bit of a late starter. At almost twenty-one she still hasn’t received her magical powers, and she’s running out of time. But that doesn’t bother Wanda. Much. Not when she can spend all of her time in the human world and pretend that her coven doesn’t exist. But when Wanda takes a job at Berrys’ Bottlers, working with the handsome Will Berry and his unpleasant Aunt Alice, she soon realises that she’s a lot closer to the magical world than she thought.

All over Dublin, humans are murdering witches. When asked why, all they’ll say is, ‘I dunno why I done it.’ But Wanda thinks she does know why they’ve done it – and hopefully she’ll receive her power in time to help her coven discover the truth.