Thank you all for your responses. They really give me food for thought, from trying to stop beating myself up, to being more careful myself.
It seemed, from the guys initial response, that this was a no big deal blip on their screen, while on mine there were visions of ambulances with screaming sirens, hospital gowns, traction, casts and worse. I do like the idea of just walking away, but it wasn't in the cards yesterday, while my husband never mentioned it at all except to say the name of our friend who actually was backed over by someone. I should have remembered that before going in back of the car. Eye contact with the driver is what I'm going for in the future.