Athens isn't a very big town. I'm not sure what other options than TKD are there. Might be better off getting her to change the attitude than the art.
The only thing else in McMinn County I found when I searched the web was a couple of Ishin-ryu places. Those might be good as far as Ishin-ryu goes. East Tennessee is arguably of the cradle of it in America.
Probably have to make a drive to either Chattanooga or Knoxville / Oak Ridge for something like BJJ.