Katie Kitten and the Emerald Star (experiment)

Katie Kitten is an ordinary horse crazy eleven year old from Oklahoma. when a winged pegasus shows up in her back yard, she's thrust into a world she doesn't understand,in a role she never thought she'd play. Katie finds herself as the Princess of the magical world she just discovered,with parents who thought she was dead,and a brother who thinks she's a fraud. can Katie and her brother set aside their differences and unite when it matters most?