I started this thread to explore female singer/songwriters, not chicks with blazing guitar skills as some took it.
Richard, I think the confusion is that the technical term for the genre you are after is "Girl with Guitar." "Chick with Guitar" is not a genre. ;)
Amelia Curran's "War Brides" is a winner, and a nice recording. (But I'm enjoying Sharon Isben, too.)
Not GwG strictly speaking, but in the neighborhood and excellent are: Robinella, Jesse Sykes and the Sweet Hereafter, and Crooked Still.
Eva Cassidy's GwG collection, "Simply Eva," is -- as might be expected -- supernatural. Best version ever of Wayfaring Stranger.