In the companion title to A Very Brave Witch (2006), the gutsy, green-skinned girl hopes to teach her little sister to be courageous as well. McGhee positions the older, unnamed witch girl as narrator, reacting to events with a rather smug superiority. She wants Witchling to "study the humans and learn their mysterious ways," but at the sight and then taste of candy, Witchling's reaction is "yum" instead of the prescribed "yuck." At first the older sister is proud of the little one's bravery, but readers will see that all Witchling's developed is a sweet tooth. Parents can relate! Misadventures follow as Witchling takes off on a broom to participate in Halloween trick-or-treating. Bliss infuses humor into his watercolor-and-ink scenes by including an anxious yellow cat who interjects "Holy catnip" and "Holy whiskers" in thought bubbles. When Witchling ends up with an overflowing, too-heavy hat full of candy, her older sister swoops in. But the extra weight is too much for the broom, and Witchling must dump out her great haul to the delight of the humans below.

– Kirkus Reviews, August 1, 2014

Though other witches are afraid of people and their strange ways, the protagonist and her little sister are curious about them. Once Witchling learns about Halloween, she develops a taste for candy and goes trick-or-treating. When some older kids try to take away her hat full of sweets, her sister swoops in to the rescue and takes her home. Borrowing a few elements from comic books, the text consists exclusively of speech balloons, and there are two panelled pages. Full-page ink and watercolor spreads contain some funny details, like “Graveyard Barbie” or a can labeled, “Slugs, Organic.”

– School Library Journal, September 2014