This really felt like a breakthrough moment. I was a bystander and witnessed my mother's tactics against others. It was an epiphany: She does it to others. It means that it's not my fault.
Reading this, I felt a sense of relief so I can only imagine how much better it felt for you, the confirmation that you are not the cause and she does it to others.
I too want to know how this carries over as the realization sinks in and if you see improvement the next time.