Currently I live in Tallahassee and work only blocks away from sorority row although I went to UF so I don't know if I can be of any help.
The only website I know for the Tallahassee Alumnae chapter is
http://garnet.acns.fsu.edu/~ccr3382/
My advisor when I was in undergrad graduated from the Omega chapter but it was a few years after your friend graduated. I will contact her and see what I can do since I still keep in contact with her (she is also the president of the jacksonville alumnae chapter).
My best suggestion would be to contact the Tampa Bay alumnae president because a majority of their group are omegas. She could send out an email to their alumnae list serve and there would have to be someone that knows who you are talking about since so many of them graduated from Omega.
Good Luck with your search and I will let you know if I find out anything.