Heh...you know, I actually thought of that...she even just purchased a nice desk to sit at for writing.
But I think it'd be cheating, since I started it before NaNo!
Ugh...my glasses are driving me crazy these past few days. I think I have a scratch that is small, but right in my field of vision. I've cleaned and cleaned and cleaned them, and they still bother me.
I'm not sure it would be cheating, since your main story would still be the diary. If you're allowed to quote whole poems, why not be allowed to have a character write a story which you've started?
My monitor is giving me a headache. I need a flatscreen like the other guys...