Question: What did Lorraine Warren see during the footage where they participated in an exorcism of a farmer? She stared into his eyes and screamed, then they mentioned that she locked herself in her room for several days, and that it affected her badly. Has that ever been explained?
Answer: Ed's death.
Question: What's the background story about the demon women? How did it all start?
Answer: She was a witch that committed suicide. Before, she cursed everyone who set foot on her property.
Answer: She was a person of interest in the Salem Witch Trials. Before hanging herself, she put a curse on her land that basically is that if you are a parent, you will sacrifice your child and then kill yourself. She did this, sacrificing her seven day old baby then killing herself.
Question: It's made clear at the beginning of the film that a demonic force is something that has never walked the earth in human form. Yet The Witch did walk the Earth in human form, but still has all the powers of a demon and Lorraine even calls it a "demonic presence." So can humans become demons when they die or did I miss something?
Question: What is the situation with the maid and the woman who hung herself in the cellar? Not to mention the little boy. I'm aware the Witch cursed them and possessed the mother to kill the child. But are their spirits being controlled by the Witch? I know they scare the Warrens and stuff. But the little boy (Rory) teachers April where to hide and shows where he hides. But why is he hiding if The Witch controls him? Are we to believe the Witch can't find Rory's spirit? But if the spirits are under her control why would Rory help April stay safe?
Answer: The witch controlled their souls to kill themselves, but once they are dead she can't control them anymore. Some spirits just show up in the house but Rory knows what can happen and decides to help April.
Question: It's established that The Witch possesses the mother. So is the Witch controlling the mother like a puppet or is she controlling her as in, she actually is the mother. Because when Ed says "reveal yourself", it's the Witch. When they try to drag her out, she gets dragged back in by an invisible force. So in what way is the Witch in control of the mother?
Answer: She is controlling the mother like a puppet.
Answer: It is explained in The Conjuring 2 that Lorraine has a premonition of Ed being impaled.