Thanks for all the support. I had no idea about all those PA laws and I just moved to Charlotte NC from a philly suburb 6 months ago. Go figure.

I haven't given up yet. Turns out the license number I gave to the cops did NOT match with a suburban. It came up as a ford escort. Couldn't get more diametrically opposite than that! So, we are going to try and see her again at the elementary school and see if we got the # right. If we were right about the number then she is using a fraudulant license plate and I am pretty sure the cops would LOVE to know about that. I've got my fingers crossed.