What are teachers opinions about the mum screaming at the bully in Australia?

If you're unaware a girl in Australia was being bullied for a year. The mum and victim were begging for over a year to help the victim. The school as they do often. Which is absolutely nothing. (I speak as an Australian schools in Australia don't care about bullying unless thr victim lashes out and then the victim will get in trouble)

The mum gets into the school and screams at the bully

Many many kids have killed themselves from bullying and we know that very recently the victim came home in tears because she was told to kill herself by the bully. This was likely the final straw and I assume a final meanless beg to the school ended in this

Australia is mostly by her side because you stand up for your kid because the schools won't

But what do teachers around the world think?