Cathedrals Of Glass: Valkrys Wakes - A. J. Hartley

Since their ship crash-landed on frozen Valkrys, life for Sola and her companions has been harsh, but those who survived have settled into a quiet routine. Sola, however, tires of this life and is desperate to leave this world behind. She believes the ancient crystal ruins hold the solution. What she discovers may help everyone escape Valkrys - if they can still trust each other. Otherwise, the icy planet may be their final resting place...