Ruby by Lisa Pinkham
A queen without a kingdom...
Twelve-year-old Addy has learned that the world as we know it isn’t exactly what it appears to be. With the help of a very special doll collection and a magic opal necklace, she is introduced to other worlds where animals can talk, mermaids are real, and rabbits can read your mind!
This time, Addy meets Ruby, the lovely Queen of Pristina.The only problem is, her kingdom has been stolen from her by another member of the royal family and it’s up to Addy to help her get it back!