We were just talking about this again at dinner. I spoke with the principal last week. I could write a book with the conversation we had, but I'll try to sum it up.......................
He called a bunch of kids in to his office & spoke with them. He also spoke with Kelly's mom, who works at the school. Kelly's mom told him that it wouldn't surprise her because of what she is going through with Cory

, however, the principal said that after speaking with Kelly she adamantly denies writing the letter & the principal said he believes her.
He also said that Katie was not in school on Monday. DD said today that Katie's mom (who also works at the school) approached her today to tell her that Katie is very disappointed that my DD would even think that Katie wrote this letter to her. DD said she just kept saying, OK.
The principal said he believes it's just a case of "mean girls". I was very disappointed in this & kind of told him so. I said that it angered me to think that whoever wrote it is going to get away with it. They will think it's OK to do it again, whether it be to my DD or someone else. It still ticks me off, to put it mildly!!!
My DD is fine & has moved on. In our minds (my family) we still believe that Katie & Kelly are at the bottom of this but have been unable to prove it. I seriously hope that the real culprit comes out of the woodwork eventually.
It was a sick, filthy, vile letter.