I accidentally scraped a car whilst making a turn in a tight corner in a car park. I felt bad, so I waited for the owner to come out so I speak to them. I waited for a good hour. I couldn’t write a note as I didn’t have a paper nor a pen and I had time in my hands to exchange details with the owner so I waited. However, somehow the owner got into their car without noticing the scratch and drove off. The car park was filled with cars that I didn’t notice the owner leave. I tried following the owner to stop them however, they were completely leaving the town I live at and I had low fuel. It was a bmw 525 2007, the car has a few previous scratches and more. There was a witness, however, it was just a student at a school. I don’t even know if it was reported. I don’t what to do next because I did try do the right thing. I recorded everything from me waiting, to me following the lady to stop her. It’s not a major scratch it’s a Basically a paint swap at the corner front of the car.