Memory Thief

Twelve-year-old Rosie Oakes has suffered from a lack of maternal love all her life, until one day she finds the book "Guide to the Universe of Witch Hunters". This is how she learns that her mother is the last witch hunter, terrifying and invincible creatures. But many years ago, one of the witches, the Memory Thief, placed a curse on her so that she would forget the most precious thing — the love for her own daughter.
Now Rosie must defeat the witch and save her mother, but for that, she needs not only to find a weapon against the witches but also to uncover the secret of her birth.