She tries

Mary couldn't take it anymore. Imprisoned, servile, horny, she had to cum. She shoved her hand beneath her skirt, tried to get beneath the bloomers, and started hungrily massaging her sex through them when she couldn't.

She was such a dirty girl, such a slut. She needed a punishment very badly. She was closing in on an orgasm more quickly than she expected with the bloomers. But something was wrong. She was past the point where she should have cum, but her arousal just kept building.

She had had her eyes closed, head thrown back in ecstasy, but now her eye's met her reflections. She was smiling, and she shouldn't have been. "Ello slut," her smiling reflection said to her, in a horrible french accent.

"You're very horny, no? But a esclave putain like soi meme doesn't get to decide ven she cums. Zat iz for our master," shetold herself. Mary didn't know any french, but could somehow understand what she'd said. A **** whore like herself... The words didn't help snap her back to herself, on the contrary, they just made her hotter.

She was too horny to argue. She was getting hotter with every second but was unable to get herself off. On some level she knew she needed to stop, but her body was so **** for release. "I'll lose my mind if I don't get fucked right now!" she screamed. As if on cue, there was a knock at her door.