Rear-view mirrors hit, accident causer went to report, what to do?

Hello, just a girl rang me and asked me if your car was mine (was just parked in front of the house). She hit me on the left outside mirror and completely destroyed it, but she didn’t know what to do in that case, and since I don’t know, I wrote down your car registration number as well as your name phone and cell phone number. What can I do in this case, or what is most convenient for me? Thank you! Greeting, tritonit P.S. Hab inzw a central bank called for insurance and the information is given that the car is insured at KRAVAG Hamburg if it plays any role.