Mirror of Ice — Jennifer San Filippo

Clara doesn't mind that her Christmas is going to be a disaster. Really. She's happy to spend the biggest holiday of the year with her weirdo, reclusive uncle in a cabin in the middle of nowhere, instead of living it up with her rich parents.But the season is turned upside-down when Clara falls through ice into another world: a place called Winterlight, full of fierce elves, haunted forests, and an abominable snowman. Clara just wants to find a way home from this freezing-cold nightmare, but Winterlight may have other plans for her.