you can see on the tape the entire encounter, her body language, her balance, and that no “yank” occurred, at least by CL. Brushing past her in 2 seconds was so casual he didn’t even connect to the fact it had occurred
I still think he, and not someone else, pulled moderately hard on her sleeve or arm. It looks like he was irked that the reporter was trying to get in more questions after Trump had made it pretty clear that the press Q&A was over and done with. But again, I would not prosecute. This maybe-yank has been analyzed nearly as much as the Zapruder film.