A little interlude in which Mary explains how she came to be semi-consensually possessed by a demon:
"How did you get that?" he asked Mary.
Her expression turned guarded. "David never told you?"
"He told me what it was and how not to piss it off. He didn't tell me how you got it."
She sighed, shifting in place a little. Her knee knocked into his. "When I was a girl, I had dreadful dreams. I'd dream that I was dead and rotting in a coffin, that I had murdered my entire family with a knife, things like that. They went on for two years, until one day a woman came to the door. She told my parents that she was a nun, but she had no habit. When she saw me, she laughed and acted like she knew me.
"That's the first time I heard the voice. The voice knew her. I could feel it, too--it hated her, but it was happy to see her, too. I think maybe it loved her."
"Bullshit," the demon's voice growled, making Sam jump.
Mary didn't bat an eyelash. "She'd been following this one demon for a very long time. She kept finding it and exorcising it, but it kept coming back. Some of the people it had possessed died during the exorcism. That's why it had chosen me--the nun didn't want to see a child die and the demon knew that.
"But the demon didn't want to go back to Hell, either. It was tired. They were both so very tired, and I think maybe she had come to love the demon back, in a way." She paused a moment as if waiting for a response; when the demon remained silent, she went on. "So she spoke to my parents and then they offered the demon a deal. It could stay in me so long as it didn't actively harm me or let harm come to me. In exchange the nun would not try to exorcise it, nor would she prevent it from seeking another host after I die."
Sam listened to the whole story in silence. "What happens if the nun dies?" he asked.
Mary smiled a little, faintly. "It wasn't a nun, Sam."
I think the demon might have a New Yawk accent. Why, I have no idea. But that's the joy of magical realism! Nothing has to make sense! \o/
Also, in my head Mary now looks like Christina Hendricks.
ALSO, also--apparently I have something about demons and women named Mary and threesomes. (People who know me from the Supernatural fandom will get that reference.)