She is a character in Russian fairy tales, the daughter of Spring and Frost who yearns for the companionship of mortal humans.
Snegurochka is also depicted as the granddaughter and helper of Ded Moroz, the Russian version of Father Christmas.
I searched the 'net for some images of her, and here are a few that I found:
|painting by Vasnetsov circa 1900|
|dark haired Snow Maiden from 1973|
|statue in St Petersburg|