Even if she hasn't heard the code, the first thing she thinks when seeing toilet paper is that it would be good for writting on? I normally don't writ on anything, let alone toilet paper.
Argh, I love the simplicity of this game, and the visuals are awesome... If (both) endings were slightly less underwhelming, I'd absolutely adore this game!
Now, I'm fine with the bad spelling and grammar- you're obviously not native English-speakers. But when a word is typo'ed in one place and not anywhere else, such as gaining a "thropy", it just screams laziness.