At Tor.com she tagged six "Science Fiction and Fantasy novels with royals that will abscond with your heart," including:
Unconquerable Sun by Kate ElliottRead about the other entries on the list.
I do not use the phrase “I would read this author’s grocery list” lightly. But when it comes to Kate Elliott, that is applicable. Kate Elliott’s latest, Unconquerable Sun, gender-remixes the ancient Greek ruler Alexander the Great in Princess Sun, a girl who has come of age under the shadow of her fierce mother. Sun has a legacy to contend with. Her mother, Eirene, is the fierce queen-marshal who expelled invaders and turned their land into a republic. But, as her family’s enemies scheme to rid Chaonia of its heir, Princess Sun turns to unlikely allies to survive. Among them are her biggest rival, her secret love, and a dangerous prisoner of war. What I love about Sun is that she’s a cunning sci-fi heroine who is imperfect, and all the better for that. Elliott’s space opera is so detailed that you can see all aspects of the cultures and politics she’s created, which makes for excellent tension.
--Marshal Zeringue