I need a female jazz vocalist. No Krall, No Norah

Uh...Billie Holiday?

Also agree with the recommendations of Shirley Horn, Cassandra Wilson, Abbey Lincoln, and Sarah Vaughan.

Dinah Washington, Betty Carter, and Dee Dee Bridgewater are three others to add to your search.

Happy hunting.

Has Stacy Kent been mentioned? Great vocalist, and also Diane Shur.

Not sure about "jazz," not sure Norah does jazz, for that matter, but if you want singers, two that I don't think have been mentioned are Julie London, and currently, Kari Bremnes, from Norway.

You can find Ms. Bremnes, and a great catalog of female singer-songwriters at Harmony Ridge Music, http://www.hrmusic.com/index.html. (I have no affiliation, just offer it as a source of interesting stuff.)

Nina Simone, the earlier the better...

Try Etta Jones (not the same as Etta James). Lonely & Blue is the album I know.