May take several decades to reincarnate

Saxby thudded onto a steel strut below, slurping her arm into the back of his throat, gulping it down. “Lovely how my poison brings out your flavor,” he purred. “When I tasted your blood before, it helped me tailor this venom just for you. This sampling will evolve it even further, sharpen it so that my next sting will end you—from now until the End of Days, every little piece of you I take makes me better at killing you. I have your scent, monster, and now it is I who will follow you through the ages, killing your every incarnation.”
Wind whistled against Ryn and undid her braid, the loose, whipping strands filling her with a sense of loss. Naomi’s kind hands would never do that for her again.
“You hear me?” Saxby spat. “I am what you’ve always claimed to be—I am the thing that eats you.”
She fastened her attention back on the dragon, its fury bunching all that killing power into a tight S-curve. It reminded her why she’d come: not to feel sick, not to mourn the phantom of a thing that never could have been. I came here only to kill.
“—and when you wake from this death decades from now, I’ll bring you the girl’s bones.”

Chapter 17, Page 268


Soon they were gone and it was just Ryn and the whistling wind, the darkness, and the descending snow. She’d killed three asura, badly mauled the fourth, but there was no “almost” to this task. Saxby had her taste—enough so that if he stung her again, it might end her present incarnation.

Chapter 17, Page 271