[Betty Jane]

but it is possible that the dog poop was sent by a disgruntled student.

Um, no, the fact that she admitted it negates that idea. The high and mighty Stanford PhD French Professor did it in the office with the dog poop.

[after dark]

This woman needs to lose her job.She shouldn't be teaching at a University.Once upon a time professors were expected to be rational.If this is indicative behavior of all the faculty at the University of Northern Colorado, parents would be better off saving their money and sending their kids to bar tending school. Educated people who are not well behaved and moral are like chimpanzees with degrees.

I would not bother asking such a tart for an apology.The best you could expect from the bimbo is an insincere apology. In fact, I would encourage her to send similar presents to all the people she dislikes.Eventually she'll get what she deserves.

[Walkingfeather]

Just a hint to all of us tempted to pull such a prank some time.... no doubt we wouldn't use our own printed return address envelope, but, when you are full of rage you will miss the obvious,because you do not do this kind of stuff every day. But the police that investigate see things you will never see, and you can't protect yourself from what you don't know.
Because of her blind stupidity she was not only caught but she will be remembered for how she was caught.which will follow her the rest of her life.