Untrue. The media event was over. Trump was leaving.
No - the main event was over, but that whole thing was a media event. If they can catch the candidate coming in, it is like that. When they leave, they are fair game. I've seen it - at the state level, and a couple times at the national level. (Ironically, once, when Bill Clinton was in town.) If you watch the videos, there are dozens - maybe hundreds of media jostling for position. They don't all try to get right up with the candidate, for whatever reason, but you can even see Trump shaking hands with people as he leaves.
What she did was not out of the ordinary, and quite common.