The kid tattled on her mom, mom will do some jail time, the kid will get kicked out of school, mom will lose her job, will be unable to defend herself from the D.C. vermin, and the kid will wind up in some relative's home to be molested by an uncle or half-brother.
My first thought. I don't see how the kid could accidently grab the DKNY bag when she meant to grab her own backpack.
And your assessment of the tragedies awaiting this family are probably spot on.