I don't know, however I do Love Bonnie Raitt.

yes, they were working on something a year or two or three before her big comeback
i think he had too many things going on at the time
and she was still climbing her way out of the gutter
funny enough, she was friends with Vanity/Denise at the time
who had recently gotten it together herself

Sometimes there's a good reason why some recordings stay in the vault.
I'm not saying they were bad songs, but they just didn't suit Bonnie imo.
(they would've been fine for Vanity/Apollonia 6 though)