She told me if I say about this in the village I need to mention her exam.

She thinks it's a cool plan to stay up till noon because tomorrow she has an exam at noon, and that way she can stay up studying until it.

I think it would be better to sleep at regular times and study at normal hours and get a good night's sleep before the exam, and have a good breakfast and do a bit of morning studying before it...

But then, that's just me and my wacky ideas!