Unholy Hunger
"You're burning."
"I'm aware."
"Kael." She crossed to him. For all that she was the cruelest of them, she was still his sister - and there was something in her face that was not cruelty now. Something older. Something almost afraid. "You know how this ends."
"Yes."
"Then stop. Come back. The burning can be reversed in the early stages - if you stop, if you leave her alone"
"No."
"She's mortal." Vael's voice sharpened. "She will die. They all die, Kael, every single one of them, they are made of time and they run out of it, and you will be left"