Sounds like the unit she worked in wasn't totally competent. I'd give general advice to anyone (who cares) to be careful working with a group of incompetents or in a drowning situation, it's hard to avoid catching shit.

I've recently read a story about a missing woman who was found years later apparently wood-chipped all over her backyard. The husband has never been arrested. How are we judging someone guilty in the nurses case when there is just a statistical uptick.