Holly and the Silver Unicorn (Magic Ballerina: Holly Series #2)

In Enchantia, Holly discovers a carousel of mythical creatures who have been enchanted and trapped on the carousel by Wicked Fairy. Now, the Fairy wants to capture the Silver Unicorn to complete her menagerie. Can Holly and the White Cat warn the unicorn in time, or will they also be trapped on the carousel forever by the evil mistress?