Infinity - YA Fantasy

Poor Infinity didn't only lose her parents when she was six, she also lose her ability to cast magic. Her relatives sent her to the Blue Moon (non magical world) to live with a foster family and for 10 years she was happy. 

But when the God of Water chose her to be her next priestess, she is sent back to the silver moon and enroll into the prestigious Blessford Academy with the title of royal and with no magic powers. Brave enought to stand the bully of her envious cousins, Infinity draws the attention of bipolar Prince Julian Blessford, the heir of the fifth element and the most powerful magician of Glantis. 

She became his personal toy. And no one exept him is allow to mess with his toys.So that's a nice way to protect someone you like...