The Princess With No Power

Shurui lived in a kingdom with her father, brother and aunt. Her father ruled most of this realm. Her aunt ruled the realm of Hell. Her brother ruled no realm for he was human. Humans could not rules in these realms. Shurui, however, was part human part pooka-cat. She only knew simple magic. Her father did not expect her to be successful or ever learn to rule. Her father had ruled for millenia and was not giving up the throne anytime soon. He is the most powerful being in this realm, besides the time that her aunt visited, which was very often. Will the princess ever succeed in this realm and go onto rule? Will her brother be jealous of her power or will he be happy for her power?