It's amazing what you can find on GC if you do a little digging! I was wondering about Ms. Thompson-Jennings-Foster's Greek affiliation myself before I happened to stumble upon this thread.
I remember in an interview with Larry King about two years ago (around the time of "Elvis Week") Linda told how Elvis used to sing some of her old sorority songs. That would've been a hoot to witness!!
Linda seems like such a sweet lady, and from all accounts I've read, is thought of very highly by all the different Elvis factions who've written books, given interviews, etc.
The only real objection I would have with her - since I'm such an admirer of Elvis's ex-wife Priscilla - would be how she is on the record as saying how much more compatible she and Elvis were because they were both from the South, how he should've married someone from the South, blah blah blah....but she ended up leaving him too after four years for pretty much the same reasons (if not worse reasons!) than why Priscilla left him!
Interetingly enough, one of my sorority sisters happens to be Ann-Margret, who had an affair with Elvis when Priscilla was dating him. Sorry Cilla!!
Thanks for letting me indulge my Elvis-geekiness!!