Magic Pony Carousel #5: Crystal the Snow Pony by Poppy Shire

When the Magic Pony Carousel comes to Emily's town, she's excited to ride Crystal, a beautiful caramel-colored pony. As soon as Emily settles into Crystal's saddle, the carousel whisks them away on a magical adventure in the snow-covered mountains. Emily and Crystal are just in time to go to a village's Spring Festival, and they quickly make a new friend! But there's danger looming. Emily and Crystal must protect the villagers from an avalanche, and find a missing boy!