Try To Drop It Off In Her Room

You seal the backpack up. You need to get this back to her, but you can't do it in a way that spooks her. It's already tough enough to try to talk to her in a normal environment. But trying to approach about her backpack filled with wet Gym Socks?

No.

You decide that you can try to talk to her about it, once you know her better. Trying to talk to her is scary. Why do you think you haven't done it so far? You decide instead that you will drop it off right next to her door and then consider talking to her some other time. This is easier.

Or at least it seemed easier until you do it. Once you reach the door, you are right about to drop off the bag when a stench hits you. It smells like...It smells like sweat and cum. The door of her room is open just a crack.