Astrid Knowles said this quote

And when he ran the blades over her she felt light as a feather, floating happily into that place where pain and pleasure walked hand in hand, fully clear and conscious and she looked out to the darkness that lay outside of their artificial day. All too soon it was gone, her vision dimming and her breaths evening as she found somewhere darker which centred around the golden light of her Master’s voice as he spoke to her.