"...if I... tickled your feet?" you asked, feeling yourself blush a bit. When you met her gaze, you saw a sight that both startled you and made your cock twitch: Abby's eyes had glazed over, and a seductive smile formed at her lips. "Ooh, absolutely! I've..." her voice trailed off a bit, and then she said: "I've always loved having my feet tickled..."
You tried hard to keep from drooling, and then, with your left palm supporting her heel, you slowly, yet gently and nimbly, started to move your right fingers across her impossibly smooth, incredibly soft heel. Abby giggled, sighed and squirmed as your fingers danced steadily upward, from her heel to her sole. Abby gasped, and started to fan herself. From there you went to her arches. At this, Abby let out a small cry of ecstasy, her toes curling and her hips jerking upward.
"Abby, what's wrong?" you asked, feeling alarmed. Abby looked to you, her eyes shining. "Oh... nothing..." she said, panting slightly. "M-my feet are... v-very sensitive... this is... w-why I love getting them tickled..." As this revelation (and the thought of how you could easily exploit it) hit you, you felt your dick become rock-hard, and a bulge appeared in your pants that Abby hadn't noticed. She laid her head back, moaning as you started tickling again. Once you got to her toes, she gave another cry, and her right leg spasmed, sending her other slipper flying off her foot.
Without realizing exactly what you were doing you stopped tickling Abby's left foot, only to grab her right one. Hungrily, greedily, you used both hands to tickle both of her feet, going as fast as you could. Abby's giggles, moans, and cries of rapture led you to believe that she was, somehow, close to orgasm. Her hips began to quake, and the trembling spread very quickly down to her tightly-curled toes. Glancing at Abby, you saw tears in her eyes, and she was smiling as you tickled her. You managed to get your fingers under her toes and tickled there, and Abby yelped.
"Yes! YES!! Right there, right there!!!" she managed to say, her voice breathless, before letting out a loud scream of ecstasy, her legs and feet quivering so violently that you fought to keep them steady. Then the trembling finally subsided, and Ms. Abby LeBlanc was staring, glassy-eyed, up at her ceiling, having apparently just had an explosive orgasm.
"Abby?" you said softly, now slowly massaging her feet. She groaned. "Oh, child, that was... that was... incredible! God, it's better than sex!" she said, still breathing heavily. "It's a good thing you're legal; I think I'm in love!" she continued, causing you to blush.
"Oh... as a bonus..." Abby said, looking at you now. "You can keep my shoes... I daresay you'll find ways to... busy yourself with them, till the next time you come back here..." At this, your jaw dropped and your mouth watered. Abby giggled, and gave a sly, seductive wink.
What happened next?