A missing moment from many years, even decades before the start of the series
That tribe had made Kanna put on, at sixteen, a betrothal necklace… a collar with her future owner's tag.
This tribe has no such custom. But for all their pretty words of courtship, many men here still don't respect women as equals.
She's worn the necklace for too long already, a reminder to never go back that she no longer needs; this tribe is her home now. For her daughter Kya's sixteenth birthday, Kanna takes the necklace off and gives it to her. "Here, Kya… and remember always, you belong to yourself."
"Never mind, dear. I'll explain someday…"