You might like to discover this book from the 5-6 booklist.
Dragonfly song
"The firstborn baby daughter of a priestess is cast out and, after raiders kill her adopted family, she is abandoned, anonymous and mute. Called No-Name, the cursed child, she is raised a slave. At twelve, she learns that her real name is Aissa, the dragonfly. Every year, the Bull King takes two young children to brave the bloody bull dances in his royal court. None has ever returned. But, for Aissa, it is the only escape. She is resilient, resourceful and fast but, to survive the bull ring, Aissa will have to learn the mystery of her true nature."
Orr, Wendy