I don't think she would ever fake accents
She just lost it as she started hanging around with more city ppl
Although if she did it would be another quality she shares with madonna and her British accent.
she was from Pennysylvania, and moved to Tennessee at 12, right?
and her demos when she was young shows that her voice is actually pop, imo
and she made pop songs too
maybe she didnt fake it, but it doesnt really sound like southern Nashville accent a lot