I just started for the second time The Sorceress and the Cygnet by Patricia A. McKillip, the first book of her Cygnet Duology.

I just started for the second time The Sorceress and the Cygnet by Patricia A. McKillip, the first book of her Cygnet Duology. 

Time to return to Ro Holding and a tale of stars and time, in which the very constellations are at odds and a realm must, without armies, fight to live.