She is kind

Princess Cecilia of house Luzmaila was unlike many Royal child was a gentle soul, with a gentle heart filled with love and compassion, which according to her description makes her sound like an angel. But at the same time she was a Shrewd, enlightened woman, who wasn't afraid to stand up for herself and be independent both in word and action. She also had an artistic side to her, as acting and singing became her primary hobbies.

Thou, Sammy would make claims that this was but an act to straighten her Image and make her seem more approachable and likeable as a way to get support from the people around her, so she can gain more power and control. You, yourself can tell that some of his clams and conspiracies about her are just Sammy feeding you information that your sister told him. But you couldn’t exactly deny theres could be truth to them. After all, out of all of the king children, she is by far the one that most of the kingdom likes the most, even more than the actual heir to the throne, who isn't as popular as the king's youngest daughter. And considering how powerful she is, it only proves that she is even more in control than she let on.