that's the waitress girl right? IIRC she comes down the left hallway, so you'll have to keep an ear out for her audio cues and check to shut the door if need be
But the thing is, Hana won’t stick to one door the whole time. She will switch between the right and left doors as the night goes on. Listen closely and close the door before she enters.
If she crosses the barrier on either side, quickly knock the tray of burgers and fries out of her hand and it will reset her back to the cafeteria. Failure in doing so results in a game over.
