A room with a strange contraption

Yvette saw light at the end of the narrow tunnel she was crawling through. "Finally! That must be the end!" She thought, as she peeked her head out, she saw a strange room. The walls were completely white, like some sort of marble that was cold to the touch. The naked girl pulled her body out of the hole after checking the room was not occupied by kobolds or other creatures. The strange room seemed to be lit by an unknown source, and in the middle stood what looked to be a metal box, about 5 by 5 feet, and reaching up to the ceiling. It had a door that was slightly ajar and she could see an array of glowing buttons inside...

Yvette noticed that the claw contraption that the kobold clamped around her neck was still uncomfortably squeezing into her throat. She rolled her eyes grumpily "Those damned kobolds... I'd rather steer clear of them in future, but they did kidnap Meghan. I hope those devilish creatures don't manhandle her too bad." Yvette huffed and pulled on the pole that attached to the claw of the device. "Dang thing... Let go of me!" She pulled with all her might despite the pain in her neck. Eventually the thing popped loose but the constant pressure on her throat didn't let up. She had pulled the wooden stick out of the device which now only had an open socket on the front. She felt around the inch wide band of steel but could find no way to open it and even the seam had seemingly disappeared. Tossing the useless stick to the side Yvette sighed a frustrated sigh.

Examining herself Yvette saw what the dungeon had done to her so far: She was completely naked. Her beautiful mage robes were torn off and in the scuffle in the narrow passageway her panties were lost as well. "My only remaining shreds of modesty..." she said out loud. Looking down at herself she was also reminded of the mild but constant pain that the metal bands around the bse of her breasts inflicted on her. Not only that, but they also caused her boobs to stand out obscenely, her slightly purple nipples standing at constant attention. "At least those horrible piercings are gone now... But the squeezing these evil things do to take control of my spells is too painful! I must find a way to get rid of them!" Yvette tried to rid herself of the metal bands but they were going nowhere, she also tried again with the steel collar but to no avail... "Damn! Well at least i'm not physically injured. Best move on and see if there's some way of escape..."

Yvette notices a dark hallway just behind the metal box in the middle of the room.