Order her to go home in her underwear

"Okay now, let this be a lesson for the future: before threathening to kill someone make sure they can't take all your clothes. I once saw a wizard make some woman's clothes melt off like liquid."

The knight has her hands wrapped around her torso, trying to cover her underwear from prying eyes. Her embarrassment is so acute, you can see how she flinches at even that passing mention of taking her clothes.

You scoop up the pile of her remaining clothes.

"Remember this. Now run off, go home."

Her head snaps in your direction, with a look of incomprehension. She barely manages to stammer a few words, remarking on her state of undress, before you overrule her.

"Bu- but I'm not wearing.."

"Not my problem. These clothes are the spoils of victory, and you best be glad I'm not taking more. Now shove off."

You watch as she turns, tepidly, checks for onlookers, and finally sprints away for a nearby backalley. You eagerly watch the spectacle of the knight, fleeing in public wearing nothing but her lacey undergarments.