[neverending]

I think there are women in all those decades who belie those stereotypes. There have been scary/monstrous women in horror films since the beginning of filmic history- just a few examples would be the witches in Haxan, the Bride of Frankenstein, Wasp Woman, Countess Bathory, the Merrye sisters in Spiderbaby, the protagonist in I Spit on Your Grave, Ms. 45... those are ones that come to mind off the top of my head.

I would love to see an essay sometime that focused on scary women. I realise this dsidn't answer your question, or contribute anything constructive.

Sorry.