Blood Consort by D.S. Wrights

I am a Scarlet. They call me Rose.

Rose belongs to the “Reds.” That’s what the vampires call the humans who are born slaves in the Blood Empires.
Since Rose was made a Scarlet at the tender age of ten, she has known only one goal: to become the Blood Consort of vampire elder Augustus Aurelius, at whose court she is being trained. For not only does this position offer power, influence and the chance to become a vampire herself, but also the opportunity to see her mother again and meet her father.
But then the infamous Crimson Armand returns to his father’s court, who, as a half-vampire, is not only one of the rarest of creatures, but proves to be Rose’s greatest challenge.
For Rose is hell-bent on achieving her goal. Cost what it may and if it must be, even her heart.