By getting her to control herself (or at least trying to)

Inside your bedroom, you command Adela to strip once more. With your submissive completely naked, you say "Sit down for me."

"Yes Sir."

With Adela seated, you smile. "Spread your legs."

"Okay Sir." Again, Adela follows your order.

"Masturbate for me."

Adela's hand snakes towards her slit. As she rubs her entrance, you peel out of your shirt. Once it lands on the floor, you watch her play with herself. Most guys would just enjoy the sight, but you're watching for signals of her coming climax. A quiver of the lip. Her toes curling. Her body tensing up. Her legs moving wildly. It could be anything.

You're certain it starts when her breathing grows heavier. Not long after, her legs move uncontrollably. You grin and let it continue for a few seconds, knowing she's getting really close to her release. When she closes her eyes, you say "Stop."

In defiance, Adela continues to touch herself. Your face crumples up in frustration before Adela cries out "Fuck."

Her body quakes throughout her defiant orgasm. Now spent, she sprawls out on your bed as you walk towards her. Once you're looming over Adela, she whimpers "I'm sorry... I couldn't help myself Sir..."

"That's not good Adela. You need to control yourself."

"I'm sorry Sir."

"That's okay." A wolfish grin lights up your face. "That just means I'll have to punish you."

"Yes Sir."