Tease her back

You withdraw your finger and bring it around to Sue's mouth. Your left hand continues its **** of her breast. "Lick my finger Sue, taste your own juices off the finger of your old student. Isn't that symbolic?" She baulks initially but with a little nipple squeezing she reluctantly opens her mouth. "I wonder what the author was thinking when he wrote that... Oh the author's me."

You add a second finger to the first and run it around her mouth before pulling them out and sliding your hand back up between her thighs. With your left hand you grasp her own hand and move it to your crotch. She wraps her fingers around your clothed cock, feeling its outline. "Oh, you are so hard, why don't you let me take care of that." She starts to turn but you press her forward as you slide both fingers up her quivering pussy. You spread your fingers and start to tease them back and forth and around. Slowly, with almost no back and forth motion you start to stir up her cunt. Her hand grips your cock through your pants.

"Do it properly, I'm getting close", she hisses, starting to stroke your cock through your pants. You just raise her hand back to the window frame as you continue to tease all around her g-spot. Her breath starts to come in shorter gasps. "Oh... oh... I think... I’m... going to..." you stop, leaving your fingers spread and lingering inside her. She moans with frustration. "Why have you stopped?", she is trying to move against your fingers but you easily move your hand in time to keep your fingers stationary within her. "Because you're a tease Sue, and teases deserve to be teased themselves." You can feel her juices running down your hand, pooling in the webbing between your fingers.

"Oh please, I need to cum", she whines. She moves as if to grab at your cock again but you easily capture her wrist trapping it behind her. Her body is trembling, her face flushed. She closes her eyes, looking like she is trying to will herself over the edge, but she can't do it. You softly stroke the pad of your thumb across the inside of her wrist. You wait until her flush recedes and her breathing becomes more regular before once against starting to slide and twist your fingers within your former teacher.

She resists briefly at first, not wanting to give you the satisfaction of her reaction. But her body is already running too hot and before you know it her ass is butting against your cock as she humps against your fingers. You can tell she is trying to stifle her response, to 'trick' you into letting her cum. She looks kinda cute biting her lower lip, her brow furrowed, pretending to just suffer through it all. Once again her rising flush is a dead give away, you almost laugh out loud when you see it returning. Sue gets this determined look on her face and just as she starts to ride your hand harder you pull your fingers out of her wet box.