The Books of Ambha4 books in series
Empire of Sand Publisher's Summary
Mehr is a girl trapped between two cultures. Her father comes from the ruling classes of the empire but her mother's people were outcasts, Amrithi nomads who worshipped the spirits of the sands. Caught one night performing these forbidden rites, Mehr is brought to the attention of the Emperor's most feared mystics, who force her into their service by way of an arranged marriage.
She discovers that her new husband is a mysterious, enslaved Amrithi with abilities like her own: together they must use every ounce of cunning, power and will they possess to resist the order's cruel agenda - and should they fail, the spirits themselves may awaken seeking vengeance....