The fantastic thing of Princess Academy is that it ended in a good place. Life would continue on with all the new changes that the Princess School had brought about. Miri and Peder would get married, or at least be considered engaged. Life would be happy. So the thought of a sequel seemed unnecessary at the time.
Well Palace of Stone changes that. It's now time for Britta's wedding and all the girls from the school have been invited to attend. Unfortunately there is civil unrest in the kingdom and things don't go as planned. Miri is off to Queen's Castle to study more, while the other girls go off on their own social excursions. I'm not going to lie - I liked the group dynamic of all the girls. I may have actually missed them while Miri was off being political with her friends in the Salon.
Overall, it was an enjoyable book that shows that you pick who your family is and that it's right to stand up for what you believe in.