What can I do if I was charged with leaving the scene of accident?

I was found guilty for the person that drove my car she bump the car behind her while parallel parking and it was little damage to the car she never mention the incident to me I found out when the police inform me that my car was involve in accident went to court I was found guilty for damage to unattended vehicle even I was not the driver and the DMV has it as leaving the scene of an accident but both cars were park overnight and the damage to the another cars was less than $200.00 damage it was the plastic grill I would like to know was that right charge the police charge damage to unattended vehicle, it is effecting my CDL license with leaving the scene of accident.