Ice Whisperers - Stachera Helenka

When Bela's mother dies, she is summoned to deepest Siberia to stay with an uncle she's never met. Exploring his strange scientific workshop, she uncovers a secret she was never meant to find - a doorway that opens to an icy land, frozen in time and full of legends come to life.But this frozen land is in danger, and it's up to Bela to find a way to save it. To succeed, she must join forces with the impossible: a long-lost sister she never knew she had, born 40,000 years before . . .