I see Princess Anella as a tom boy (like me) before such an idea every occurred or was tolerated by anyone. That means that her interests and talents weren't quite feminine, but she tried.
So why is she out for revenge? Well, you see, even though she was willing to accept that her growing skill with a sword could never be seen beyond the midnight lessons in the arms-room, an uncle she'd never been told about had other plans - not that he knew anything about her first hand.
Thanks to her passion for the tournament (like her father and her brothers), she wasn't in the palace at a time when everything fell apart. Her uncle somehow was able to smuggle a sizable force into the palace when everyone was busy preparing for the ball that would take place after. Anella came in after the coup was successful to find her father impaled and her brothers hung from the rafters. That is enough to give anyone nightmares.
Since she is in disguise as a boy, she is able to see and then get away before anyone is the wiser. And then she is on the run. Until she can figure a way to drum up an army and undo the damage, she's just a girl, seventeen years old, who happens to be pretty good with a sword.
One thing evolves to another and someone comes up with the idea of following the tournament circuit. Just following wasn't good enough either. Passing as a boy of roughly fourteen, she needed to sharpen her skill with the sword enough to win each event. She could accomplish two things this way. First, competing in every district around the land would almost certainly see her presented to the new king personally, but almost might not be good enough; placing well would very likely seal the deal and she would be able to confront the man who had killed her father and brothers face to face. The other thing she could accomplish is a private meeting with each of the lords who were attached to her family via marriage. Everyone could make an appearance at the grand tournament in the capital, and lords could bring an entourage of guards; they would even be invited to the ball, and could bring an escort. With luck, her army would be enough. With luck, she would be presented to the king. Everything - the entire house of cards - depended on if the new king, her uncle, was as passionate about the tournament as her father had been. It depended on how much of the customs he'd changed and how much he'd much he'd kept the same.
Need I say... Yeah, she got the bad guy, but that's not where this story ends. You see, he's had an entire year to import his own personal army. Now she had to go after them. No way could she just let them wander around uncontested.
I'm working my way through a final edit and waiting for some feedback from some pre-readers, or beta readers as they are commonly known. You'll be seeing this book on Amazon hopefully by the end of the month. Look for it.