Babbette Freneire-esque? From Interview with the Vampire:
“She was looking at me now, the lamp raised; and just when I meant to look away, I saw her face change. It went still, blank, as if her soul were losing its consciousness. She closed her eyes and shook her head. It occurred to me that I had somehow caused her to go into a trance without any effort on my part.‘What are you!’ she whispered.’You’re from the devil. You were from the devil when you came to me! ”