Well, you'd already paid. Mostly.

You lifted her to her feet by her long, dark hair. “That wasn’t a good decision,” you said quietly. Her eyes were fixed on the knife in your other hand.

“What are you going to do?” she asked nervously.

“Whatever I like,” you replied with a smile. “Turn around. I need to make sure you don’t have any more of these on you.”

She tried for a sultry spin, but you caught her when she was halfway through. “Put your hands on the wall and hold them there. If I see them leave the wall…well…” you let the threat sink in as you sheathed the knife you’d taken from her. The wall was a few feet away, but within easy reach and her hands shot to it like it was made of silver.

She nodded earnestly as you removed your gauntlets and hung them from the back of your belt before beginning your search of the prostitute. Your hands ran up her soft, strong legs, under her dress, until you reached her waist, finding nothing but a sheath sewn into the dress, it was empty now. You slid first one finger, then a second into her already wet pussy, provoking a soft gasp. “My, my, my, you are a little slut, aren’t you? There’s more to you than just a robber. Tell me, is it the theft, or the getting caught that gets you all hot and bothered?”

Though it was hard to tell, you thought she flushed at your question. She opened her mouth to respond, as you withdrew your fingers, “It’s you, sir, being controlled by you, I swear that it’s your tou—“ she began, attempting to ingratiate herself to you.

She stopped because you’d driven a sopping wet middle finger into her ass and she was a little busy being surprised. “Well, nothing there,” you muttered to yourself as you continued with your search. After wiping your hands off on her skirt, you continued upwards. Though it would have been hard to conceal anything in the naked skin of her stomach, you checked, thoroughly, before moving up to her breasts. You kneaded them for a moment, before checking her top. Other than a purse sewn into the lining, there was nothing there. After a long moment of thought (and groping, and, incidentally, grinding of your cock against her barely covered ass) and a few more ingratiating comments from the whore, you came to a decision.