The Blood Crow - Chapter 22
Chapter 22 - Prices to Be Paid is up on AO3
Or read it from the beginning here
Rook learns just how steep the price she must pay for the magic she's used will be.
“Ah, I see,” he huffed. “I did warn you, Rook, that the more you used the magic of the deeper Fade, the more it would affect you. Have your friends noticed?”
“Not yet,” she said, “At first it was just a flash, a flicker, but now I fear they are permanently this color. I’ve been using an illusion spell from one of your books for the past few weeks.”
The great Wolf leaned forward, inhaling her scent, examining her, then considered her with grave red eyes. “There is no disentangling yourself from the Fade now, Rook. No matter how long you may live in the waking world, you will be tied to the Fade, and you shall not know the peaceful rest of your fellow elves.”