I don't think you can project your experiences onto anyone else @Lizzielocket as people suffer in very different ways.
It really interests me, I call it the 'Disney Complex' where adults look at their childhoods, you can either go shit happened, it'll make me stronger, I don't want my kids in the same situation. Or the opposite is this idea that childhood should be like a Disney Movie / Enid Blyton book, you hold onto that seeing yourself as a victim who deserved to be treated like mini royalty.
You don't know why your Mum did that, you don't explain if she was a single Mum, battling against all odds to do her best for you. In times of stress etc, she was ill but you survived.
With your outlook, are you suggesting children of parents unwell in any way is a huge negative for children, so they should be moved to a more positive environment?
I made an inappropriate joke at an appointment and was rushed to see a psychiatrist, they take your history from your earliest memories till the present day. I was told I wasn't mentally unwell, I was just unfortunate to have a shit life.
I believe from a certain age we are the architects of our own destiny, so as soon as I could I got a job to help out at home, I worked hard to achieve the best results possible. I remembered my childhood and merely thought, well I won't repeat that with my children.
If OP can let us know of the tribunal date, after she sacks this poor woman for vomiting, I'm sure many would be in support of the Nanny expected to do far more than she's paid for. She's not an au pair. Who's to say that the poor woman took time off previously and was reprimanded, due to the impact on OP. So this time she did things differently.
If you work in an office, managers don't rifle through bins or even employees possessions, unless they have a reason that can't be argued with. Such as knowing an employee is stealing.
For me, if it was on the side or table, my first thought would be oh dear someone is ill, i'll throw this away, then check all is ok.