"I'm worried about you Oubai-san." she said gently through the door, hoping maybe he'd answer it so she didn't have to talk through a piece of wood.
"Kozue-chan is my friend, but so are you, I don't want you to be upset, please just talk to me...maybe I can help" she lent against the door frame, hoping that if anyone walked past they'd not think it too odd she was talking to a door.