Roots of Chaos Series Collection 2 Books Set by Samantha Shannon Day of Fallen

A Day of Fallen Night:
Tunuva Melim is a sister of the Priory. For fifty years, she has trained to slay wyrms - but none have appeared since the Nameless One, and the younger generation is starting to question the Priory's purpose. To the north, in the Queendom of Inys, Sabran the Ambitious has married the new King of Hróth, narrowly saving both realms from ruin. Their daughter, Glorian, trails in their shadow - exactly where she wants to be. The dragons of the East have slept for centuries. Dumai has spent her life in a Seiikinese mountain temple, trying to wake the gods from their long slumber. Now someone from her mother's past is coming to upend her fate.

The Priory of the Orange Tree:
An enthralling, epic fantasy about a world on the brink of war with dragons - and the women who must lead the fight to save it. The House of Berethnet has ruled Inys for a thousand years. Still unwed, Queen Sabran the Ninth must conceive a daughter to protect her realm from destruction - but assassins are getting closer to her door. Ead Duryan is an outsider at court. Though she has risen to the position of lady-in-waiting, she is loyal to a hidden society of mages. Ead keeps a watchful eye on Sabran, secretly protecting her with forbidden magic. Across the dark sea, Tané has trained to be a dragonrider since she was a child, but is forced to make a choice that could see her life unravel.