Do you think she might have also been processing some pain for the other people her brother mugged and beat - the ones who didn't have a gun to protect themselves?
She condemned his actions. So did the mother. But if this was you, who would you be most upset about? Someone you knew for many years, or a stranger? Just because it wasn’t shown on camera, didn’t mean it wasn’t said. There is alot that gets left on the cutting room floor.