I've been an actor for over 30 years, and I have to give her props for being able to switch from accent to accent and actually do a pretty decent job on most of them. I agree with the comment that if she had an opportunity to listen to an actual speaker from those regions for 30 minutes she would probably be dead-on. I also agree that very few actors who are not from the South can do a convincing Southern accent. As any Southerner will tell you, there are so many regional variations that a Southerner can usually discern that probably sound alike to a non-southerner. Georgians and North Carolinians, for example, sound quite different to me (a Virginian).

Bleaaah! Freez-dryed!