There would have been no way I let her go without getting info. Hopefully your paint did not separate from the metal. Though it may look like everything is intact, the paint really could just be sitting on top of the metal and is just waiting for the right thing to come along and flake it off.
Sidenote, I was at a Sam's Club parking lot where TWO idiot backed up into each other. It was a good hard hit, but both cars were junker vehicles. They both got out, inspected their damage (there was damage to both vehicles) and decided they didn't care. I'm sure cause no one wanted to bother with insurance since they BOTH were at fault since they both backed into each other. It was like a comedy routine, the way it went down.