A collar and healing

While the blue woman held Power Girl's arms behind her back the woman in red placed a special collar around the kryptonian's neck. It was tight, not enough to restrict Karen's breath but enough that she would always know it was there.

"The collar is more than just leather it is laced with a faint amount of kryptonite. It will not harm you but it will keep your powers dampened if you should leave this room" The pair explained as they let Power Girl go and stood back right next to each other

Of course Karen tried to take it off which resulted in her getting a powerful shocked which made her fall to the ground, her body shaking as the volts coursed through her.

"Attempting to take the collar off will result in a shock"

"Sure, NOW you tell me" Karen complained as the electricity finally stopped.

"Now lay down, flat on your back"

"Or what?"

Pressing a button on their wrists, the women delivered another shock to Karen who once again convulsed and screamed in pain. Once it was finally over Karen obeyed, laying down on her back with her arm covering her breasts or rather her nipples due to the size of her breasts, and crossing her legs to hide her snatch.

"Arms and legs extended and away from your body"

"Rao dammit" Power Girl cursed and spread out her arms and legs, leaving herself completely exposed to the red and blue clad women

The both got on their knees, their hands covered in lotion. Starting at her muscular arms and legs the women rubbed the lotion on Power Girl's smooth skin.

"This lotion is of Mistress Onyx's own design. It will have you healed up for when Mistress returns" they both explained in unison

Karen just let out a sigh, having **** but to take it. At least it did feel good.