Blood of Aurum - Neriad Royalty, #1

Troian Aurum lives in two worlds. One where she is the heir to the Aurum kingdom, preparing to fulfil her legacy to rule over the Neriad as Queen, even if the kingdom she is inheriting seems decimated after the execution of her parents. In the other world, she's simply a woman, one who is in love with a human she's known since she was a child. This part of her knows both who and what she is, and also the weight of the responsibility this brings.
Troian had kept these worlds seperate, secrets held from the other, and even from her longtime love, Rodon. Until now. Love is stronger than any bond we know, between any species that exist. However, when forces beyond their control conspire to tear the lovers apart, their connection is tested to breaking point. When Rodon is banished to depths of the seas, Troian won't stop until she secures his freedom, refusing to allow anything preventing her reuniting with her mate.
Troian soon realizes that having been kept in a castle and away from the rest of the Neriad civilizations, that things are not as she once believed. She quickly comes to understand that her journey has a deeper significance, and that maybe something far more nefarious than simply being divided from her mate, is at play. Not all is what it appears in the land beneath the seas.