Tress from the Emerald Sea

Tress lives on an island in the middle of the sea. She has a habit of drinking salty tea from mugs, in the cracks and crevices of which history is hidden. And Tress loves people. And she is not upset at all if they talk a lot and sometimes lie innocently, like her friend Charlie.
But one day Charlie leaves the island because he has to marry a princess. Not of their own free will, but for political reasons.
However, later it turns out that a disaster has happened. Everyone doesn't care that Charlie might die. Everyone but Tress. But is the girl ready to leave her peaceful life and go on a dangerous sea voyage, where every drop of water carries a deadly threat?

The book "Tress of the Emerald Sea" is a fantasy adventure of a brave inhabitant of the island of Tress by the American writer Brandon Sanderson. The life of a girl on an island in the middle of an emerald ocean is simple: to collect cups brought by sailors from distant countries, to drink salty tea from cracked mugs and to listen to the stories of her friend, Duke Charlie's son.