Sorority Strongholds?

[Shellfish]

I recently read the novel Whistlin' Dixie in a Nor'easter because the author is a KD from Alabama--in fact, she mentions in info in the back of the paperback edition that the main character's friends are modeled after her own sorority sisters--but as in The Help, the main character is a Chi Omega from Ole Miss. I wonder why these writers wouldn't take the opportunity to give a little PR to their own sororities, but maybe the Chi O at Ole Miss represents to them the epitome of southernness.