>Another vote for Jonatha Brooke! Saw her a few years ago when I had no idea who she was, and have been a fan since.
If you like Jonatha Brooke, check out her ex-bandmate Jennifer Kimball (
http://www.jenniferkimball.com). I don't know if Jennifer actually plays guitar, but she's terrific nonetheless
Also, if you like Jonatha/Jennifer check out
http://www.saragroves.com