I Am Margaret Moore by Hannah Capin 

Each summer the girls of Deck Five come back to Marshall Naval School. They sail on jewel-blue waters; they march on green drill fields; they earn sunburns and honours. They push until they break apart and heal again, stronger.

Each summer Margaret and Rose and Flor and Nisreen come back to the place where they are girls, safe away from the world: sisters bound by something more than blood… Read more.