How can anyone resist a talking tortoise and a good-hearted young witch? … Readers will cheer for the bighearted Mildred when she takes huge risks to save Einstein, her tortoise friend, and he in turn saves her. An old-fashioned tone combines with Briticisms and sophisticated vocabulary to make this a fine step up from early chapter books. Distinctively detailed black-and-white illustrations grace each spread, adding humor and information to the narrative. … Heartwarming magic with just the right touch of talking toads and tortoises.
Featuring a lively, likable protagonist, humorous touches, and intricate black-and-white illustrations, this sixth Worst Witch title is another entertaining read in the enjoyable series.
Heavily illustrated, with plenty of white space… Quite a nice facelift to a fantasy series for those not quite ready for Harry Potter.
—School Library Journal