MichaelR-
This may not be the info you seek either, but I'm pretty sure something has already been done to preserve/record Mary Jane Queen's music. For several years, she and her son have performed at the Swannanoa Gathering near Asheville, and I believe they've [she, rather] been awarded something like a state-cultural-heritage-legacy-prize. Wayne Erbsen or Jim McGill at Swannanoa College would have the details on that. www.swangathering.org And I know she has at least one recording of ballads.
T