There was a similar case in Massachusetts many years back. It never went to trial, and legal analysis could go both ways. The bargain struct was it would go into secretive judicial oversight channels.
There is a strong case to be made for obstruction of justice, and an equally strong case to be made about her making an error in her professional capacity as a judge and a government employee (which grants a level of immunity). Police officers, judges, soldiers, etc. make mistakes, but they generally don't go to jail for them because (even corruption aside) everyone makes mistakes. In some jobs, mistakes can and do have severe consequences up to and including people dying. If that led to prison, no one sane would take those jobs.
In any sane universe, it'd be fair to say she screwed up, and then the FBI also screwed up arresting her. I think the FBI screwed up more, since their mistake was premeditated, whereas she was put on the spot.
I do agree with your fundamental point of fatigue. This is not something anyone has a moral high ground to hang their flag on without looking bad.