Her boots... And nothing else

Weiss peered into the bag and couldn't believe her eyes. Yang had left her naked, covered in cum, and under the table in the cafeteria. The only generosity Yang showed her was giving Weiss her boots, and her scroll, alongside a message.

"Next time remember your place, this is your punishment. I'll let you try and earn your clothes back tonight, don't expect a stitch until you do so. Meet me on the dorm rooftop tonight at midnight, don't bother coming back to the room"

Great, Weiss thought. She had 5 hours to kill until midnight and only her boots to wear until then. Not only that, she'd have to sneak out of the cafeteria, around campus, and through the dorms completely naked.

Weiss didn't have much options, what's her next move?