What if someone scolds my mother?

You can collect evidence by video in time, and you can bring a lawsuit to the court.

If the mother is physically and mentally hurt, she can find the property or call the police to ask the parties to apologize. Assuming that the child was there, you can persuade him first, because insulting others is also a crime, you can warn him and take legal procedures.

If the abuse has caused mental damage to your mother, you can show the corresponding proof, ask her to compensate for mental damage, ask her to compensate for personal damage and apologize.