Lianna is clever and understands her own faults. She is also seen to have a high regard for manners and correct behavior, putting a lot of emphasis upon behaving as a royal should.

She is rather naive to the ways of political intrigue, as shown by her shock when she realized that rulers could take multiple spouses, and her disbelief of how they competed for the chance to have their children be the heirs to the Nohrian throne.