DiFranco offers healthy stew of vocals, guitar.

Byline: Gerald M. Gay

Aug. 10--Ani DiFranco might want to consider changing the name of her Buffalo, N.Y.-based record label from Righteous to Invincible Babe records. It doesn't seem like much can stop her. Severe tendinitis grounded her busy touring schedule in 2005, but she sprang back, recording her latest album, "Reprieve," late last year. And even as Hurricane Katrina swept through her part-time home in New Orleans -- forcing her to leave midproduction -- the popular singer/songwriter soldiered on, finishing the release in her native upstate New York. All this drama, and the talented folksinger still managed to knock out a quality album, just one in …