Grete Havnesköld

A doctor and her teenage daughter relocate to a small town in Scandanavia's frigid far north. They realize something strange is going on in the town, but when the vampires emerge to attack, there's nowhere to hide in winter's perpetual night.

Lotta is angry because she is considered too small to make all the fun things as her older siblings Mia and Jonas can do. (imdb)

A feisty five-year-old girl Lotta decides to move away from home. And no, she doesn't want to put on the stupid sweater. (imdb)