Yes, she is. I think my favorite song of hers is the one in spanish about the prisoner. There's a lot of fire in that one.

My main problem with the songs of hers that don't appeal to me is that I don't find her credible on songs like "House of the Rising Sun," or songs with a country-ish patois in them. Which is too bad, because she's wonderful with songs like "Mary Hamilton" or the like.