Empress of Earth - Book III of the Roads of Heaven
by Melissa Scott
Following "Five-Twelfths of Heaven" and "Silence in Solitude", this is the third and concluding novel in the Silence Leigh series. Silence Leigh now faces the ultimate test of her skills as a pilot and of her powers as a sage.
Silence has finally wangled a deal with the Hegemony to use their gear to help them find the lost star roads to Earth.