There are two ways to interact with authority: being respectful and acknowledging it or being an idiot.

This Mom had multiple chances to avoid this escalation: "Yes, thank you for bringing it to my attention. No, will not do it again." - Instead she decided to go full Karen(TM) (https://en.wikipedia.org/wiki/Karen_(slang)) and went insane on the security, police, and child protection service.

You can argue that she had every right to be an idiot; but play stupid games, win stupid prices.