We feed her everything from greens to fruit and even reptimin soft gel. You can buy some crap to rub on the shell to improve it and shine it up! I forget what its called.
Actually, I think its more closely related to turtles than tortoises, similar to box turtles. At the moment, I can't find anything that specifies it one way or another, but I don't see how they're anymore "tortoises" than box turtles or terrapins. Tortoises are classified by more characteristics than just their environment.
And since this is a Central American wood turtle, I don't believe you'll find them around your house in TN. You're probably thinking of US box turtles, which I do admit, can look similar to a layperson.