Wife used to be a journo, so i know a bit about them from her
Not Caro is it?

On the rest, it's all her call
Whether she calls the cops or not is her call, not yours to demand approval on
I'm not saying it needs approval by me or anyone else, and yes you are correct, it is her call, but it is very very odd that she didn't get the authorities involved. I know I would if someone was threatening my life.
I personally was involved in a serious assault in my youth, and after the visit from the cops it went no further. Reason why, despite seriously hurting the other party, they didn't press charges. I have no idea if it was my good record, they pitied me, they thought the punishment would be excessive, or it would be inadequate. Point is they made a call to give me a break for reasons that were their own
To be blatantly blunt, they probably didn't care, all the time, effort, money, resources and manpower involved the police really just don't care, unless of course they have all the evidence right there in front of them so they don't have to do much legwork.
Why isn't it the same for this woman? As bad as the incident was, she doesn't want to destroy his career
I can tell you first hand that Woman get well looked after by the authorities and courts system.
Quick story, my own cousin who I no longer speak to, claimed I made death threats towards her, even though A: I was never there and B: I never said anything of the sort to her, she called police, I was arrested, gave a no comment interview (as all people should do when being interviewed even if innocent) she took an intervention order out against me, it went to court, prosecutor recommended me for the Diversion program, and that was that.
And once again, I ask, a clear intoxicated (possibly high) man is standing in front of you, you've made it clear in your interviews since after that you feared for your life, yet, at the time, you made no effort to either A: Remove yourself from the situation and B: call the authorities.
My theory, she doesn't want anything more to come of it because outside of the media the story has no leg to stand on in the courts system.