As for her father, he cannot join Penelope on this trip. It is not because he despises the idea of going to the Lastoval Kingdom and seeing Melissa's family again. Clementine really wants to go with his daughter. But his work is what stopping him from leaving their kingdom.
There is a problem with the peace treaty they established years ago with the Tavsir Kingdom, one of their neighboring kingdoms near the west borderlines. It is because their king died a month ago and their fourteen-year-old Crown Prince took over the throne. After he becomes a young king, a lot of changes happened including the peace treaty they had established with different kingdoms. Because of it, Clementine has to stay with King Galia as his Royal Advisor and prepared themselves in case this will somewhat affect the peace and order in the Vestia Kingdom.