I was walking back to my car when I saw an old lady in a very old Peugeot ram into the Nissan parked on the left of me. Initially I just ran towards her and asked if she was okay. She just nodded and grunted at me. Afterwards she proceeded to reverse from the rear end of the car and was racing the engine like crazy. Then she just went on her way without leaving any info whatsoever despite the fact that she has severely damaged her headlamp and the bumper and left rear indicators of the Nissan. I decided to wait and see what she does because I felt sorry for her and the owner of the Nissan. She parked successfully further down the car park and inspected her headlamp then just walked on into the store. So I ended up noting her number plate and left it on the Nissans windscreen. What else could I have done? I should probably also add that she had very little control of the steering wheel and clutch and honestly can't believe that she is legally allowed to drive.