Spank her and make her touch herself.

You whistle, and someone opens the gate and tosses you a chair. You open it up and prop it in the middle of the ring, taking a seat, with one leg crossed over the other.

"Come here, Dakota."

She steps over to you, meekish, with all of her bravado gone. You curl your finger at her, and steps even closer. It's still not enough for you, so you grab one of her exposed nipples, tugging at it gently-- but not too gently-- so that bends over your lap.

You raise your hand, and quickly bring it down on her ass. Your hand stings a little, but you imagine it's much worse for her. You repeat the action, again, and again, and again until finally, she lets out a little whimper. You realize it wasn't a sound of distress or pain, but pure ecstasy. You grab a fistful of her hair and tug her head up, and lean next to her ear.

"My god, you're enjoying this, aren't you?" you say loud enough for the audience to hear you. They respond with cheers, and you see Dakota blush, but also bite her lip.

"Touch yourself, slut."

You help guide one of her hands towards her womanhood, pushing and pulling gently to assert your control. Eventually, she starts doing these motions on her own volition, and begins increasing speed. She lets out a moan, but tries to stifle it. You spank her again.

"I want to hear you scream!"

Her movements become more rapid, and she lets out several small moans within breathes. You spank her again. Finally, she lets out a carnal scream as she climaxes.