Today, among my nanny's bags, I saw a bag that looked like it was filled with vomit. When I looked inside, it turns out it was indeed a bag of her vomit (and a sleeve of cookies). I've had suspicions about strange behaviour before... small lies, denying when things break, not taking great care of our home... but this takes the cake. This is quite a difficult situation because she's a lovely person but I've felt for a while she has quite bad emotional issues. But now I wonder whether she's suited to look after a child. What if my young child had found the bag? Why, if she was sick, could she not have been sick in the toilet? Why didn't she throw the bag away? This is a step too far for me, but I'm wondering whether this falls under gross misconduct or if it's not considered so severe in the eyes of employment law. Any advice on what to do?