did you file the citizen ticket? confront her?
I called the courthouse to find out what was involved, and they said basically that I had to either have "proof" of her speeding and driving wrecklessly, or I had to be willing to sign an afidavit indicating that she was. I asked what happened then, and the clerk told me that in 95% of the cases without video evidence, the judge issues a warning as it's just her word against mine.
So I stopped there. A low-priority item for me has been to find a decent dash cam that I can use in my car. The problem is I need it to film behind me too. I could've gotten her with my cell phone a few weeks ago, but that would open me up to something I would imagine as I'm using my camera while driving! Oy.