She initially lifts her hips from the wall to press against his palm as she gets used to the new rhythm playing across her breast. It all feels so good and she knows he's teasing the life out of her. She'd expect nothing less.

Then his finger edges around the material of her bikini and she makes a sound akin to a whimper as it gets closer to her entrance but not quite close enough. She remember he's goo at this sort of torture.

Though she did just ask for it.

After several moments it occurs to her that he's spoken, made a request of her. She reaches a hand to her back and then her neck to undo the strings of her top, allowing her top to fall away.