Violet Devereaux: Child, I believe you broke my legs.
Caroline Ellis: It's like, hypnotism, right? Suggestion? And when this stuff works, its because someone believes it works?.. And if you thought, you know, that magic made you sick... you might believe in a magic cure?
Mama Cynthia: Somebody been workin' roots on you.
Caroline Ellis: Say I knew someone who thought that they'd been.
Mama Cynthia: Crossed?
Caroline Ellis: Crossed. Would they believe that they could be... uncrossed?
Caroline Ellis: Luke, she tried to kill me. She had a gun, I got away just in time but I had to leave Ben in the shed. We have to go back.
Luke: The hell we do.
Caroline Ellis: I left him there.
Luke: Slow down... You didn't leave anybody.
Violet Devereaux: I bet they don't have gardens like this is New Jersey.
Caroline Ellis: Actually, it's "The Garden State."
Violet Devereaux: I very much doubt that.
Violet Devereaux: You think I'm senile, don't you?
Caroline Ellis: I just don't understand. Why would the ghosts put a spell on Ben and not me? I've been in that room too.
Violet Devereaux: Maybe because you don't believe them.
Caroline Ellis: I told you I wanted a black one this time.
Luke: You know the black ones never stay. Beggars can't be choosers. I think it suits you beautifully. It's better than Violet or Grace, even. We'll get used to it. We always do.
Caroline Ellis: Do you know a record called the Conjure of Sacrifice?.. Because I have it if you do.
Creole Mother: If you had that, you wouldn't say so.
Caroline Ellis: I'm going into town for a while. Shopping.
Violet Devereaux: For what, Caroline? Caroline! For what?
Caroline Ellis: ...you'll just have to see.
Answer: In that particular scene with the servants and the kids, you'll notice that the servants' eyes are rolled back into their heads and they're shaking uncontrollably. I think this is because they were drugged. You'll also notice they never try to fight being hung, never cry out or anything. They just keep shaking with their eyes rolled upward.
They weren't drugged, they were in a possessed state.