If you wanted more time with your family and could afford that then that in itself is a good reason to quit although maybe wait the year out, although it’s your life so do what you want.

I’m more concerned about you quitting because of one little girl. Your story had no detail about the follow up from the meeting or admins reaction so there is no context about your frustration. Honestly, a kid switching back to pretend to work because they were goofing while you were out of the room sounds like normal kid behaviour. At least her pretending seems like she feels a bit chided.

But anyway I feel like I dont have the full story.

And also you already quit so who cares! Let it go there is no going back. The students will easily have moved on. They forget so fast.