The Goose Girl- Shannon Hale

Based on the fairy tale by the Grimm Brothers, The Goose Girl by Shannon Hale spins a tale of magic, adventure, a goose named Jok, and a princess cheated out of her prince. Anidori-Kiladra Talianna Isilee, Crown Princess of Kilendree was born with a word on her tongue and wouldn't open her eyes for three days for trying to find it. Woken by her aunt, the new nurse-mary, she spends the first seven years of her life listening to her aunt talk to birds and speaking to swans herself. She learns that there are three very special languages: people-speaking, which is possessed by Ani's mother,
key-mistress, and the key-mistress's daughter, Selia, Ani's lady-in-waiting, persuades people to do as you like and is very much helpful; animal-speaking, possessed by Ani's aunt and Ani herself that can warn without messengers and fit you in where ever you are; and nature-speaking, talking to a wind and fire that Ani's aunt isn't even sure has a language. When, at her father's funeral, her mother reveals that she is not to take the throne, but instead her brother, Ani's world crashes, jarring her horribly. It's revealed to her that for five years, her brother's been preparing to be ruler in her stead. She was planned for a marriage in a much larger kingdom, to avoid war. And so she and her guards head for the kingdom of her betrothed. On their way, over half of the party mutinies, including Selia. Selia wants to princess instead of Ani, so she steals her horse, Falada, and rides into the city with her supporters. Ani sneaks into the city, becomes a goose girl to survive. She must somehow get back her rightful place. How? Read it and find out.