Fighting Adventurer
Skaentoum's older sister, she always was the more active one, and admire her father's stories of battle and conquest. As such she trained under his tutelage, and became quite the fighter herself, with her unusally tall height helping her with intimidation tactics.
But as she grew older, she felt the world calling for her, and once she became of age, she announced her plans to become an adventurer, and soon began her journey. She does make an effort to return home to her brother at least once every season, to both reassure him of her safety and to ensure that he is not overworking.
Cute for the Big
While her unusual height is quite useful for a lot of things, Haerpfrew cannot help but sometimes feel out of place, and even slightly resent it. That is part of the reason she loves cute stuff, like baby chocobos, moogles and even tonberries (by her metric, they're cute), since part of their cuteness comes from their small stature. The other part for loving cute stuff is obviously the other cute features, but she is happy with her own ones. If she was able to she would try to shove a moogle in her pocket and make it her travelling stress soother, with lots of food, pats and smooches as payment.
Sisterly Duty
As a good older sister must always do, she is overly doting, loves teasing, and likes to ask for really easy stuff to as favors whenever she feels too lazy to do anything. But at the end of the day, Skaentoum knows that she truly loves her little brother (and his cooking).