I notice that Joan Baez has included a song by Thea Gilmore on her upcoming album. Haven't heard it yet but it's not such a surprise as Baez guests on Gilmore's latest album 'Liejacker'. I don't know a lot of her stuff but I heard her guesting with Martha Wainwright when they sang her excellent song 'This Girl Is Taking Bets' with its Dylanesque succession of striking images.
Thea Gilmore - This Girl Is Taking Bets (not on iTunes so here's an Amazon link for the album Rules for Jokers)
Thea Gilmore has also done some fine covers herself, including this which is somehow unexpected:
Thea Gilmore - Warm And Tender Love (iTunes)