This video was sent to RedState by an anonymous witness at the event. It shows what Valle was doing when the Paul supporters grabbed her. No one chased her around the car. She was never in front of the car. As you can see in the video, Valle reached in the candidates window with her RepubliCorp sign and shoved it in his face. Several supporters in Paul shirts have her surrounded at that point, and a man in a suit is the first person to actually intervene physically. Its hard to tell from the video, but it could be that the man in the suit was with Pauls security staff.
Toward the end of the video, you see several Paul supporters asking a police officer to come intervene. It was Paul supporters who told Profitt to back off. It was Paul supporters who brought the police. Contrary to the growing narrative on the left, this video clearly shows that Valle was not the victim of a conspiracy to take her out.