Clarine

Clarine is the younger daughter of Pent and Louise, she lived a sheltered life, with few contact with the world outside the nobility set. Despite living in luxury and being very spoiled, she lived in extreme boredom, and so she decided to run away home to encounter her older brother, Klein, who was serving the nation as a general, far away. During the journey, she is captured by Erik, who lures her pretending to help her in reuniting with her brother, but actually intends to make her a prisoner and give her to Narcian.

(Source: Fire Emblem Wiki)