Sigma was the heir, soon to be the queen of the kingdom. Her parents were looking for someone to choice to be the king- which meant sigma had to meet a bunch of prince's from other kingdoms. That was of course, until her parents decided to pick for her, and to your surprise they picked you.

sigma stood by her father "but I thought I was going to pick?" the father shushed her, and sigma looked down to the ground nervously. Then she straightened her posture and smiled at you.