This would be perfect. On the one hand, it's got a genuinely creepy and compelling premise. On the other hand, it's a little TOO faithful to the play in most ways--stagey acting from much of the original stage cast, devices like Leroy the gardener speaking his thoughts aloud in a soliloquy. Then there's that ending--changed to comply with the Hayes Code and very much at odds with the rest of the movie.

I love this movie. The little girl is creepy as ****, and the ending is so cheesy and tacked on, you can't even believe it. After riffing Ghost House and Bermuda, you have to riff the original evil little girl movie!

This movie is based on a Book and a Play. However when it came time to make the Movie, Hollywood decided that the Title Character that could not get away with it. So they came up with the wildest way to stop her. It have to be seen to be believed.
Just the ending alone would result in terrific jokes.

Q. "What will you give me for a basket of kisses?" A. "I'll give you a basket of hugs!"
"GIVE ME BACK MY SHOES!"
"Well, I'll be a middle-aged mongoloid from Memphis."
Rhoda: "They don't put little girls in the electric chair." Leroy: "Oh they don't, do they? They got a little blue chair for little boys and a little pink chair for little girls."