Train her

She-Hulk stood half naked alone with her new captive."I suppose we should start then." the green giantess said to the bound X-man "I'm going to undo your gag and we're going to begin your training if you understand say 'Yes Mistress'" She-Hulk says as she reaches to remove the gag from her captives mouth.

"Fuck you, You Bit-" X-23 began to say before being quickly cut off by a green fist connecting with her toned stomach, knocking the air out of her lungs. She let out a low moan of both pain and pleasure.

"Wrong answer, my little painslut" She-Hulk says with a smirk. "You're lucky a punch from me would put any other woman out of commission but with your healing factor your back to normal in a few minutes. Imagine how bad I can hurt you. So what do you say?"

X-23 desperately gasps for breath until finally she manages to get out the words "Yes mistress..."

"Good," the green woman says with a nod "Now first things first lets get you out of these cloths." She-Hulk says as she grips the collar of the teens tank-top and violently pulls down quickly tearing the garment. X-23's tits come bouncing out and her toned abs are revealed, still purple from the violent punch moments earlier. She-Hulk takes a long moment to admire her captives small perky breasts "I usually prefer larger breasts, but yours suit you very well." A brief moment passes "Well do you have something to say?" She says as she twists the girls right nipple.

"Thank you mistress." X-23 screams with a hint of pleasure.

"Good you're learning." She-Hulk proceeds to then rip the leather pants that act as a prison to the teens muscular legs. The teen is now only wearing plain white panties completely drenched with with her feminine juices." I guess our masters command is working." without waiting for a response She-Hulk tears the last bit of clothing the young mutant has leaving her furred cunt finally exposed. "We'll have to take care of this later."

"How do you feel about piercings?"

"Why?" the young mutant asks before quickly adding "Mistress?"

"Because you're getting a lot of 'em." retrieving a piercing gun from its container and bringing its tip to the mutants left nipple and adding a ring to the nipple. Repeating this task on the other nipple X-23 moans with arousal. "How does it feel painslut?"

"Good mistress." said genuinely and by this time out of reflex.

"Well then these next ones are going to feel even better." without ceremony She-Hulk pierces the mutants sensitive clit eliciting another deep moan of pleasure. Following this X-23 quickly gets three rings on each of her pussy lips. "I think your almost ready for our master."