Vonda N. McIntyre 
Dreamsnake [EPUB ebook] 

A haunting story of an extraordinary woman on a dangerous quest in a far-future post-apocalyptic world.Snake travels the land with her serpents, the rattlesnake Sand, the cobra Mist and the rare alien dreamsnake called Grass, whose bite can ease the fear and pain of death. But the blasted landscape of a far-future post-holocaust Earth is a dangerous place, even for such a highly regarded elite healer . . . especially when an unexpected death sends her on a desperate quest to reclaim her healing powers. Dreamsnake, winner of the Hugo, Nebula and Locus Awards, is back in print at last.