The Last Hope of Lonovia — Hunter J. Keane

Kate is an average thirteen year old girl. Average in every way until she meets a talking cat. Along with her best friend, Max, Kate finds herself in a strange land where the sky is purple, magic is normal, and strangest of all- Kate is a princess. Amid the castles, knights and royals, Kate is forced to face a hard truth. She is the rightful heir to the Lonovian throne, but she'll have to take it back from the evil Queen Luella. Kate isn't sure if she has what it takes, but she has to find a way to believe because like it or not, she is Lonovia's last hope.