While not disputing the two idiots theory, remember that she reported there was a man "Threatening her life".
That's more than just a veiled threat, and it was (I think) calculated to elicited more of a police response then the actual threat warranted. In other words, she lied to the police to get them to respond in a way they wouldn't have. That would seem to fit with the charge.
I would think any one of us would respond differently to "Look, if you’re going to do what you want, I’m going to do what I want, but you’re not going to like it.” and "I'm going to kill you."