You decide to interrogate her

You gesture sharply to your guards. "Take the daughters to the secure pavilion. Feed them, make sure they're comfortable and under heavy guard. No one touches them until I give the command."

The eldest daughter glares at you with fierce defiance, straining futily against your soldiers while her sister only followed the instruction demurely. Bolormaa watched them being marched out into the cold night air with concern but didn't say anything.

At the end, only the two of you are left in the camp. You let your gaze lingers on her, tracking the elegant lines of her tall frame and exquisite shape of her face. Even if she is older, and belong to an enemy faction, you can't deny the attraction you feel. "Your daughters' lives and futures depend entirely on your cooperation." you say.

Bolormaa looks up, and nods.