Marin wanted to be a good girl, and so she obeyed her Mistress' command. A foreign attraction was growing in her pleasure addled mind, an appreciation for her own gender that she had never known before. Her only experience in pleasing a pussy had been with her own, and those attempts were clumsy at best. She could still get herself off on her fingers easier than a man could do for her, but she wasn't so bold to presume she really knew what she was doing. Marin did know what lesbians did to get each other off, and it seemed simple enough.
She licked, her first touch tentative. The aroma of Mistress' pussy was strong and heady, and to her surprise, Marin thought she rather liked it. The taste was strange, and she tried it again. And again. Yes, she could grow to like this, too. It was just another taste to acquire, like she'd done with coffee or beer.
The toy buzzed back to life, making Marin moan into the glistening pussy. When she failed to keep licking, the vibrations turned down. "I don't think you understand what I expect of you, slut." Mistress said, pulling her face closer against her pussy as though to smother Marin. "If you want the vibrations, you need to work for it. If you want to cum, you must please me, first." A tug on the plug this time, drawing a muffled squeal from the girl. "And I am not pleased. Lick, slut. Lick like your life depends on it."
Marin obeyed, sliding her tongue up her Mistress' slit again and again, exploring feverishly in her attempt to be seen as a good girl, to earn the pleasure she so craved. It took a longer this time, and then the toy buzzed back to life. She took it as encouragement, although it was so distracting, making it hard to keep her tongue in motion. Remembering how she had instinctively begun sucking and licking the phallic gag she'd worn earlier, she tried translating the instinct here, as well.
Mistress was laughing at her, occasionally tugging on the plug via the rope. "Such a stupid little slut, aren't you? You have no idea what you're doing down there." She tutted, giving Marin's head an affectionate pat. "Don't worry, you'll learn soon. If you ever want to cum again, you'll learn to please me, first, won't you?"
Marin nodded, her reply muffled by the sex pressed against her lips. Her tongue brushed against something that made Mistress' legs twitch, drawing a gasp from the woman above her. Emboldened, she tried to find the spot again. Her tongue scraped over the clitoris, coaxing it from its hood.
"Mmm... there you go... much better..." Mistress purred, spreading her legs a touch to make it easier on Marin. The vibrations increased and dropped at random, the rotations of the toy's shaft more unpredictable than the torturous cycle she'd been forced to endure for hours. Mistress kept tugging on the plug in a rhythm that Marin could follow, and did so with glee when the discomfort became added pleasure, highlighting the vibrations.
Hips gently rocking, bobbing her head to tug at the plug of her own accord, Marin licked. She dipped her tongue into Mistress' tunnel, plumbing her depths for more of the sweet nectar within, quickly finding her new addiction. If she was going to do this more and more, Marin would learn to enjoy it. If she wanted to cum, she had no other choice.
Mistress' hips began to move slowly, riding Marin's tongue. She was pushed and pulled, redirected towards the clit or back down the slit at her Mistress' whims. Whenever Marin slacked or slowed, the vibrations would cease, making her eager for more and revitalizing her oral efforts. She felt the best when she focused on the clit, trying a technique she'd heard one of her lesbian friends talk about. Something about spelling out the alphabet with her tongue?
It seemed to work, though it was hard to keep up. Mistress moaned and rode her face, setting the toy to a pattern that was stronger than any she'd been edged with this far. It it kept up like this, even for a couple minutes longer, Marin was certain she would cum. Excitement drove her on, and Marin forget all about wanting to resist, dedicating herself now to service.
The only thought in her mind now was the need to climax, to feel what she knew would be a tidal wave of an orgasm crashing over her, if it was ever allowed to come. Marin knew by instinct that she wouldn't be allowed if she didn't perform to her Mistress' expectations. She feared she would be capable of doing that any time soon.
"Very good, slut..." Mistress breathed, chuckling in amusement. "You're working hard, now. Do you like my pussy, slut?"
"Mmhh, yesh Mistresss..." Marin managed against her mound, never ceasing in her efforts. "Good... mmhh..."