Fields, after being warned, twice iirc, by the Secret Service, to stop grabbing Trump, kept at it. Eventually Lewandowski intervened. Originally Fields said he tried to throw her to the ground, and she barely managed to stay on her feet. For some reason, even after video emerged showing her running afoul of the Secret Service, she filed charges. That is why we’re talking about it.
She seems like a bit of a crank. I think I heard that Breitbart let her go.