Nun Fighting - How funny is that

How do three nuns who have all taken a vow of silence get into such a bad situation that they end up fighting?

This has happened in Italy where three nuns are all that is left in a small convent near Bari. Two of the nuns became so fed up with the bad habits (no pun intended) of the third, they ganged up on her scratching her face

Maybe one of them snores too loud, or eats in a very nessy way, I mean if they never say anything what on Earth did she do to piss the others off so much....?

I wonder if as the first two nuns were attacking the third they were also passing her notes saying things like 'Take that bitch!', whilst she was frantically scribbling down notes saying, 'I'll fucking get you for that'

I guess this is what happens when you get a small group of people in a confined environment for a long period of time with no chance to leave. NASA would do well to take note when planning future missions to Mars.