The Haunting (1999)

Revealing mistake: Right after Nell sends Hugh to hell, Dr. Marrow and Theo come out of hiding behind a pillar. As Marrow puts his hand on the pillar, it squishes in as if it was made of foam rubber, instead of stone. (01:39:50)

Jane: Also, we know how much you loved Mom's car, so we're giving it to you.
Eleanor "Nell" Vance: You're taking away my home, and giving me a twenty year old car? Who are you?

Trivia: Ridiculously huge Jesus reference at the end. When Eleanor is blasted onto the door, her arms and legs are in the same position Jesus would've had. She is lowered down by the hands, much like Jesus would've. She also dies to save everyone else, a slightly smaller point is that you see the children 'die' and going into heaven. The bible says 'only those who are like a child are to go to heaven.'

Question: What type of "power" does Nell have that prevents Crain from harming the child ghosts while she's in the house?