Yes; Press your hips into hers

You take a step forwards, towards her, thinking with your dick.

Fortuitously, at the same time she bends over, to pick up a sheet of paper that fell to the floor. Combined with you taking a step further, and her pushing her hips back, your hips pushed into hers and you could just about feel her bubble butt against your now rapidly hardening cock.

Your eyes flutter as a soft groan escapes your lips as Sandy freezes. "Wh-" she starts as her hand reaches backwards and brushes against your thigh. "Wh- what are you... stop!" she hisses, however cadence lacking the urgency. As she ignores the paper and stands up further, her hips push back further into you and you stand there, immobile in the cramped space. You could back up a bit but you chose not to.

"Is.. is that..." she whispers as her hips finally move away from you as she turns around to face you, her hands sliding up to your groin, her fingers feeling around the shape of your hard cock through your pants. You feel your cock twitch as she does so, even if the touch lasted for a very brief moment as she withdraws her hand. She cleares her throat turning around, "Uh, yes, this paper, um.. goes, yep yep" she mumbles, her face flush.

You take a step forward again, pressing your hips into hers again at the same time your hands sliding onto her hips. You feel her melt at your touch, as her legs quiver, threatening to not support her weight. Sandy, however, recovers quickly, a soft "Uhhn~" escaping her lips.