Unicorn Dancer Series by Rhondi A. Vilott Salsitz

When the guardian city Sinobel falls beneath a treacherous conqueror's blade...When the centuries-entombed Corrupter wakes to walk the land, leading forth rank upon rank of Night's dread warriors...When the Lady Alorie, heiress to the High Counsellorship and last hope of all the kingdoms, sets forth to claim her destiny on the unicorn's trail...When mage and warrior, dwarf and elf, join in final battle to save their world...then the long-prophesied time of the unicorn is about to begin!

The Lady of the Unicorns. She was Alorie, last of the blood of the House of Sergius. She had danced for the unicorns.