That's not a NC accent - at least not east of I77. She's from Appalachia, NC (the mountains) or Tennessee, I guarantee it.
The nude beach video wasn't shot in NC. We don't have any nekkid beaches in these parts (at least not public nude beaches). The palm trees in the background as Marge is coming back from the beach say the video was filmed in Florida.
Geography notwithstanding, Marge is a hoot!