K.B. Spangler’s 2021 coming-of-age space opera The Blackwing War is the first book in her Deep Witches Trilogy. It is set in the same universe as Spangler’s 2017 Stoneskin.
Tembi Stoneskin was rescued from abject poverty when the Deep, the vast, enigmatic entity that facilitates transgalactic teleportation, took a shine to her. As long as the Deep retains its affection for Tembi, she will be an ageless Witch, stepping from world to world as it pleases her. There is little chance Tembi will alienate the Deep.
There is, however, every chance she will alienate her superiors in the Witch hierarchy. Youthful Tembi is that most dreaded of beings, an idealist.