texas*princess -- I hope that the Eating the Chesire Cat portrayal of Tri Delta isn't realistic!
As 33girl said, Anne Rivers Siddons, who's a Tri Delta, wrote Outer Banks and Heartbreak Hotel, both of which mention Greek life quite a bit. Outer Banks is about a fictional sorority, Tri Omega, and four of its alums that have a reunion. Heartbreak Hotel is about racial issues and a Southern school becoming desegrated in the 1950s, and involves a "Kappa" (KKG is never specified directly, but the connotation is there) and her KA boyfriend, if I remember correctly. In Outer Banks, she describes a fictional sorority initiation that some have speculated bears resemblance to Tri Delta's . . . hehe.
I'll Take You There by Joyce Carol Oates (a Phi Mu, if I remember correctly) includes a section where the main character joins the NPC-style Kappa Gamma Pi, but the portrayal isn't a positive one. I think she may have written some other novels where sorority life is mentioned, but I haven't read them . . .