The relief is that there is no pain he can put her through she has no already gone through. Whether it was the electric shocks of her collar, the wracking pleasure-pain of the eridium searing her body to a living death, to the fact that to enhance her they had to do test after test of cutting her over and over again from the healing rate of Eridium - to truly and finally dying. Pain? Pain is nothing to her. "I won't scream."

She will do what she does best. She will close her eyes, she will grit her teeth and she will endure the things no one is meant to. "Do it."