So... the nanny went thru their stuff when they were out,.. a massive breach of trust.
As she tells it the kids went through their parents stuff.
She was just tidying it up afterward. Kids, eh? What you going to do.
She just happened to keep contemporaneous notes of everything she heard and did (which re therefor her personal property and not on behalf of her employer) while doing so.
This is because she is a)Got a bit of APD b)Didn't trust her employer c)Planned all along to collect dirt either for herself or on the behalf of others for a spot of "Biographical leverage."
I imagine a court will have to decide which of those reasons is/are the right one/s.