I can't remember who said it but it's true that the crime itself isn't what gets you caught but the attempt to hide the crime is what gets you caught and receive retribution.

If the child is now brain dead and is basically kept alive just so they can go 'look she's not dead, you to stop rioting for her sake' , this'll escalate the violence since (rightfully) people will see the authorities using a child's body as a puppet to not claim responsibility for their actions.