Mandragora by Moonlight

'I'm just a humble hedge-witch, I know cures and charms, but little of deeper magic. But you will journey further and achieve far more than I have ever done. I've looked into my scrying vessel and seen your future as a great sorceress, standing with a powerful Magus by your side. You were born to the Craft, Jeanie, always remember that.'
Jeanie Gowdie has never doubted the prophecy delivered to her by her grandmother, Nana Herrick in her parting words, but her quest to fulfill her destiny has been frustrated by a tragic accident that led to her incarceration in a grim institution. Now, free at last, she arrives in 1970s London where fate leads her to the mysterious Antioch Corey Memorial Library and its charismatic custodian, Arawn Llewellyn, a man with a dark secret that might out- match her own. Falling in love proves to be both a blessing and a curse and Jeanie has much to learn before she can come of age as a sorceress and take her rightful place in the secret occult world.