Run.

Alexander pointed dramatically behind Hailey, "Hey! Look over there!"
Hailey was already pretty jumpy from this development and looked over her shoulder just for a moment; a moment Alexander used to push Hailey away and run past her towards the exit.

Maybe this wasn't the best thing Alexander could have done, but he couldn't think of a single good thing to do and didn't revel in this situation enough to prolong it for any time at all. He'd be able to resolve the situation afterwards, in peace and quiet... maybe take his punishment if he has to. But for now his top priority was to nope himself out of this awkward meeting.

Looking over his shoulder he saw Hailey chasing after him, but she wasn't nearly as fast as he was, and he was going to be able to leave this god damn place immediately...

As he ran carelessly however, he lost grip on the floor and slid on some water. In an attempt to regain his balance with his other foot, he ended up slipping even more. His knees buckled and he fell on his back with a thud. When he flipped himself over trying to rise to his feet, Hailey jumped him and planted her butt on his back, pinning him on the floor.
"I've got no idea what you're trying to pull here, " She said as she tied his hands together behind his back with his own shirt, "But you're not leaving here so easily after trespassing. Not before we have settled on what to do with you."

Shallow gasps of terror and desperation left Alexander's lips. Not only was he caught in the ladies' showers, but the situation escalated to the point of getting himself captured. Suddenly he looked up towards the captor straddling his back and said, "...wait. Did... did you say 'we'...!?"