Is "her" sorority a local one as well?
Just wondering because of the whole "seeking legal refute" thing... if they are local, they don't really have a case, do they? (I am just guessing that most locals don't have their letters/symbols/everything else copyrighted?)
I don't really know both sides of the story, so I wouldn't want to make any judgements on the writer of the letter... but the letter did sound rather mean