Belara's desire to go on the Hunt with her Sire is strong. Her Sire Te'Har knows when the duration comes, she will make a great Na'Katon. But her cycles are few, and she has a lot to learn, like obeying the Na'Katon when he speaks. Then the duration came when the Hunters became the Hunted, and Belara wakes to find herself the new Na'Katon.