The Empress Of Earth

Description for THE EMPRESS OF EARTH by Melissa Scott:

TEST TO DESTRUCTION

Silence Leigh is an anomaly; though a mere female, she has mastered the skills of both pilot and mage. Now, after years of tutelage, comes her final test; to reopen the road to lost Earth, thereby restoring Man's home to communication with the other worlds and securing herself an undeniable right to a starship of her own.

But the road to Earth is well guarded. If subterfuge does not breach its defenses, Silence and her husbands must fight. And against them stand the mysterious Rose Worlders and their siege engines...