Reverence: The Evolution of Emery by Maria Macdonald

Emery knows who she is now, and what she has to do.
She must beat the darkness, right?
But what if the darkness is actually her light.
Just as life begins to make sense again the world around her changes once more, making her question everything.
Emery’s beginning to realize she’s only scratched the surface, and the dig down will require more strength than she ever imagined.
The danger—she may uncover something she’s not prepared for.
Sometimes you have to sacrifice to win.

I must fight to save her—Kade
I have to survive so I can save him—Emery