shoulders back
Posture. Postur-ing?
So maybe Sena didn't have that famous - literally historic - Ardainian composure, but she did have the impossible strength (that should've showed in her arms, but didn't) to throw threats right back in their own faces; do the dirty fighting so that others didn't have to.
Others...?
Miyabi, who liked batter-whipping in the kitchen, sitting so pretty, and playing her fantastic flute. It was her own individual refinement, regardless of the source of her Core.
Miyabi was far from dainty, but she had a definite daintiness, and Sena's buzzcut lit up bright to promise her that fact.