Yes, after she negotiates an even worse one

"If I say yes..." Mackenzie shifted in her chair uneasily, pulling down her skirt. "... what will you have me do?" Her voice was breathy and teetering at the edge of exasperation. The realization that her belt won't come off for another week had weakened her resolve to fight. "Just don't make me do something ... disgusting, or humiliate me in public. This remains between us, yes?"

Marianne grinned, watching Mackenzie try to negotiate. "Kenz, you've been a little slut lately. We've all noticed." The redhead gasped, with her eyes wide open, while Marianne kept going. "All those wardrobe mishaps when the boys are around ..." "But I really didn't mean them to happen..." It was true, Mackenzie didn't do any of that intentionally. Mishaps just seemed to follow her. But that wouldn't stop Marianne from going on. "Really? I mean, look at you. You wouldn't be here if you wouldn't have been strutting around naked in your neighborhood." Mackenzie flushed at the memory of her humiliation the day before. "No, no, that was another accident." She shook her head.

Trying to contain her satisfaction, Marianne seized the opportunity to manipulate Mackenzie and push the limit of the deal. "I promise I won't harm you or make you do something that's gross or disgusting. But nothing else I will do to you, no matter how embarrassing ... or humiliating ... will change what I ... or others think of you." Mackenzie stared at Marianne, awkwardly voicing her surprise. "Mari .. what ..." "Which..." continued Marianne "... is that you're a little slut. That deserves everything that is happening to her." Mackenzie flushed. "We are friends, Mari, don't talk to me like that..."

Marianne grinned. "We were friends." She corrected Mackenzie. "And then you made googly eyes at Bill." Mackenzie tried to protest the baseless accusation again but Marianne was on a roll. "And now you're locked in a chastity belt, and Rachel and I have the key. And I..." Marianne paused, to temper the excitement in her voice, while Mackenzie listened, mortified. "Why are you doing this to me ... is this your way to get back at me for whatever you think I did?.. because I can tell you ... "

Marianne cut her off. "Yes. I want to humiliate you. But that's not important." The petulance in her voice returned again. "If you want the key back - whenever I decide to give it to you -, you will be my little slut and do what I tell you to do, no matter how humiliating you think it is. I won't harm you or have you do something that puts you in danger, but outside of that... everything I say, goes." There was a longer pause. "And don't even think of going to Rachel. I'll make sure that she does not move a finger."

Mackenzie sat silent and pulled again at her skirt. It was shocking to hear Marianne speak so directly and even more shocking to hear that the deal could extend beyond a week. "Now, I'll ask you one last time before the deal is off the table. Are you my little slut, Mackenzie? Are you going to obey me in exchange for the key to your belt, whenever I see it fit to give it back to you?" Mackenzie nodded. "No, I want to hear you say it. To beg me to take you as my personal slut. And from now on, call me Ma'am". This sounded cheesy and like something out of a lesbian porn scene, but for some reason, Mackenzie felt aroused at the thought, just as she did when she recalled the humiliation suffered the day before.

"I ... " the redhead's voice faltered. ".. beg you .. to take me as your personal slut ... Ma'am." "Granted." said Marianne satisfied. "And the first thing for you to do ..."