Belinda Murrell 
Golden Tower [EPUB ebook] 

Transported to the land of Tuscia, Sophie accidentally saves the daughter of a wealthy family and is swept along on their journey to the Golden Tower. Now she is the only one standing between sisters Isabella and Bia and the terrible fate their stepmother has planned. Sophie doesn’t think she is brave enough, but with the help of a talking cat, a stableboy and some very tiny mischief-makers, she might be able to save the day.