Conflicting emotions flashed through Leia's eyes. She was clearly considering his words. Erik could see the deep frustration and need to vent that her confrontation with Tarek awakened inside her.
More than that, however, he could see the instinctual urge to reestablish some control… because that's who she'd forced herself to become.
After talking with Naeku, Elora and Runa about it, this was the conclusion he'd come up with. Basically, Leia became of age after Ankhur had already taken the throne of what was then a small, reclusive community, and this was what saved her from being forcefully married off to a potential ally, as her parents wanted.
Ankhur was a lot more doting and loving towards his little sister, so he blocked any efforts to force her into anything, but the situation still weighed heavily on her.