Circus of shadows

Mostly shadows follow us, but occasionally it's wise to follow your shadow. Lika doesn't give much thought to her shadow. Sometimes it's long, sometimes it's short... but it is never more than a shadow. Until one day it begins acting strangely. When Lika waves a hand, Shadow raises a foot. When Lika sits down, Shadow stands up. Lika hides in a darkened room, but the more she hides, the bigger Shadow becomes, until it picks her up and deposits her...