Same reason I call them to report harrassing drivers; so there is a record of the event in case they cause another accident down the line. The difference on this one is that they could have cited her since she admitted fault.

Actually, the officer was really cool. I approched him, laid out the story, and asked if he minded if I just let it go, to which he was fine. I might have been too nice dropping everything, but like I've said, I really think it was just an accident. It wasn't caused as a result of any malicious intent, or negligence other than inattentiveness (i.e., no cell phone, etc.). Hope I'm right.