You posted it here and you expect that you're going to get ONLY opinions that validate your perspective?
Well Bucko, you don't have the leverage to expect me to move on.
I have worked with children in some capacity since 1996..in child care, as an aide, as a substitute teacher and/or as a teacher.
In none of the training or classes (theoretical or methodological) were we ever instructed to mind our own business when it came to the perception that a child was being mistreated.
In fact, we are sworn as reporting agents when it comes to parental behavior that is wrong to a child. Once we see it, we are obligated to report it.
Never ever in any law or any other code does it ever stipulate that we should mind our business.
So again, I AM going to opine here that she was not wrong whether you like it or not because...she wasn't wrong.