Thank you for playing the game!
It is indeed a bit weird that after you found the keys in the bathroom, you get a game over if you send her to the bathroom. This was initially placed as bait, but currently there aren't enough hints to tell the player when it is safe to enter the bathroom for the car keys. We'll look into improving that!
At the end of the story everything is revealed and you'll have a better understanding of how the office came to be. (Hint, press F1 for the hidden level select to jump back to where you were) Sadly as it was a school project we didn't have enough time to polish it and add more detail.