"I-I can't... master..." she whimpers, her hips still moving against the sink despite her best efforts to stop. "It's too much..." Another wave of pleasure washes over her and she bites down on her lip hard enough to taste blood as she fights for control. Her vision starts to blur from lack of air; all she can focus on is the sensation in her core growing tighter and more insistent with each passing second.

But then, just when she thinks she might actually be able to hold back...

Her body gives out under the pressure and she cums hard against the cold sink, her hips bucking wildly as her orgasm takes control of her. She lets out a long moan that turns into a shuddering gasp as waves after waves of pleasure wash over her. Tears prick at the corners of her eyes from the effort of holding back for so long and finally giving in. As she comes down from her high, she realizes that her master hasn't stopped her or given any further orders;