I cannot agree. Whether the posted speed limit is some arbitrarily designated speed or for other reasons, once someone has DECIDED to violate that posted speed, they have made a choice in their behavior. So, legally, practically, and common sense wise, this was no accident. The individual’s choice caused this event.
What if the speed limit were 75?
Nothing else is different, but the arbitrarily-chosen speed limit is now 75.
Tell me, scientifically and technically, how this would make her any less or more guilty.
"Individual's" should be "Individuals'", as both the motorist's and the officer's choices played a role in the events. It is the tradeoff between the two roles that likely resulted in the no-bill from the grand jury.