She regretted it.

The whole thing. She hated how everyone hated her, how Ms. Park sacrificed herself for her, how she hated herself. And now, as if karma had gotten to her, you and the others were in the band room with her in the supply closet.

Dae-su brought up how hungry he was, and everyone began trying to open the door. You remembered how you always carried a key for the closet. You opened it, and rummaged through the food. You saw Na-yeon, and froze. She froze as well.

But you said nothing. You just kept rummaging, this time more anxiously. You found what Dae-su wanted, and pushed everyone out.

It's now night. Everyone is asleep. Besides from you. You unlock the door and go to talk to Na-yeon. She freezes again as you approach her.