Harriet's charge is Twinkle, the magic pet hamster. Once, Twinkle shrank herself down to the size of a peanut. Twinkle stuffs a surprising number of things in her cheeks. Harriet's magic is made up of bright red sparkles. Harriet is often sleepy during the day, due to the fact that hamsters are nocturnal, and she is often up late at night playing with Twinkle. Like her pet, Harriet can see very well in the dark, and they are both very good at finding their way through mazes.