Just continue the teasing

You continue rubbing her breasts through her clothing, wondering what will happen next, when the elevator comes to a stop at the ground floor, and the other passengers step off. However, the rather feminine object of your attention doesn't even notice the change, making you realize she's rather wrapped up in your touch. Shortly, the doors close, but with nobody else in the elevator, it doesn't start moving yet. It's up to you whether to let the elevator stay in place on the ground floor while you continue playing, or to push a button.