She imagined she could hassle the federal government enough to manipulate the investigation AWAY from her and her friends, and it turned out she was absolutely correct.
That doesn't mean her friends did the work ~ but her credentials were such the FBI and others were compelled to address her suspicions and speculations before those of others.
The peculiarly formatted addresses on the envelopes were written exactly as they appeared in a publication issued by an organization to which Ivin's wife belonged.
Postal Experts understood immediately how peculiar those addresses were and looked for them on the internet ~ and found them!
The atypical structure and content of the addresses is much more than a Koinkydink ~ and it can be dealt with two ways ~ that maybe Ivins did it (which the FBI would love to believe) or that maybe the conspiracy was a bit more widespread and sophisticated than we've imagined and someone decided Ivins could be blamed for it and measures were taken to make sure that happened.
A state agent would have taken action to cover its tracks. This latest item ~ that the FBI KNEW Ivins had ODd on Tylenol and didn't tell anyone else ~ suggests that sort of thing was still going on during the very time the FBI was telling us Dr. Ivins did the job.
If there was a state agent involved I think this runs us down to a couple of folks, one of whom is a Moslem at the FBI.
So, Ed, it ain't over 'til it's over! And it ain't over.