What the child says to the officer is telling...
At the beginning...
Officer - "can I talk to your for a sec?"
Girl - "No, I am not doing anything"
Officer - "I got a call on you, can you stop right there?"
Girl - "I don't want to!"
Officer - Stop
Girl - No!!
Officer - Stop right there
Girl - I don't want to!
That dialog right there shows you how she was raised.
Probably a single mother, no Dad around to back the mother up. So when her mother tells her something - all she has to do is yell no.
In school she probably gets away with damn near everything, the teachers likely just deal with her as best they can so they can at least try to teach the class etc.
She looks 14 or 15 and literally acts like a 3 year old. ZERO parenting being done. And an education system that is all about pandering, protecting students from any little problem they have.