I have to say, I completely understand that woman.
I hate bullying with a passion. I was severely bullied as a child. I think there should be some consequences for parents of bullies (maybe legal, maybe being forced to home tutor their children if serious, I don’t know).
I have repeatedly told my children that if they ever bully or are mean to anyone weaker or more shy than them, then they will spend moths regretting it. I have told them that if they ever hit someone unprovoked or say something mean unprovoked there will be hell.
However, I have also told my son that if someone punches him, he punches back immediately, aiming for 3cm behind the nose. Bullies tried to go for him on two separate occasions, they never tried again and wanted to “be friends”. My son is friendly, but no close friendship.
My daughter was targeted by a girl. We kept a diary of every single incident (With time and date) and when we had two pages, we invoked the school bullying proceedings. I also told her to say factually to the teachers / other girls: I don’t like x, she keeps throwing my things at the floor, she says I am the ugliest girl in school and she said she didn’t care my grandfather is very ill (girl eavesdropped when DD confided in a friend). I don’t want to sit next to her, play with her or work with her”. Funnily enough, it stopped. I might have advised my daughter to casually mention to the girl that bullying procedures could end up on the permanent school record (I have no idea if this is true, but the girl got scared).
I think there is a special place in hell for bullies.