The 9 Sisters (Book 4:Princess of the Oceans and Seas)

Aquatica is a quiet little individual that loves water and being in it. In this book, she handles her life in and outside water. She slowly falls in love with her betrothed prince, and all is happy until an unknown brother comes to fight and bring down their kingdom. Her bravery, her risky choices and her happy ending is shown in this book.