The Winter Duke by Claire Eliza Bartlett - Review by Lou Loves Books
'The Winter Duke is a fantasy set in an icy land which is split into two parts Kylma Above, and Kylma Below. Kylma Above is a land in perpetual winter and the climate is much like the inhabitants, cold and unwelcoming. Kylma Below is an underwater land full of magic and mermaids.
It's full of court intrigue, cut-throat characters, and slow-burn F/F romance.
Our epic heroine had got it tough trying to bring order to the kingdom!'