Her Pleasure

I let go of the switch and walked over to her stark, exposed body, still trembling with fear and electricity. Leaning in close and caressing her hair once more, I murmured," Now this is where we left off isn't it? This is the part where we're going to be a good girl and do exactly what Dr. Asher tells us to do, right?"
Still shaking, she looked at me and hesitantly nodded. "Good," I said. "Now. Tell me what I want to hear."
"I-I only exist...for... your ....pleasure."