Minas by Elisha Kemp

Sira had everything she wanted. A mother who loved her, a palace to call a home, and – as a third daughter and very spare heir – no real responsibilities. But when her mother and eldest sister mysteriously die, and her second sister, Xenodice, takes up the mantle as Minas Crete, everything changes.
Locked away in Potina’s temple, Sira is determined to keep serving her people, whether it means praying for the dead or smuggling out sacred herbs to those who need it. Until Britomartis arrives, stealing Sira’s deepest secrets and her heart, and turning Sira’s world upside down.
Meanwhile, across the sea, a crudely-built Achean fleet makes it way to Knossos, carrying an enemy King in search of a royal bride – and his younger, illegitimate brother, Lykos, who is desperate to make his own mark on the world, whatever the cost.
When the gods deliver a message to Lykos that is meant for another, they set in motion a series of events that has three very unlikely allies coming together. But can Sira, Britomartis and Lykos survive the notice of the gods – and each other – or will they fall like pieces in a game much bigger than themselves?

Minas is a MFF spin-off to the Dying Gods series focusing on Britomartis, Sira and Lykos. This story picks up at the end of Wake the Gods. While this can be read as a stand-alone book, it will contain spoilers for the first three books in the series, will reference events that occurred during previous books in the series, and contain many of the same characters.