So I just had to remove her rear motor and unwire it all from the controller and replace the rear disc rotor and rear caliper...After getting all this done, now she has a flat tire... I cannot believe it but she had ridden this thing so much she wore out the full 17" dot rated China tire and popped the inner tube...
So I will now need to remove the rear wheel assembly again and replace this junk tire and get a new tube!