By the end of the 1990s, the Final Girl trope had arguably run its course, at least within a conventional slasher narrative. One reason for this, I think, is because of the self-reflexivity of horror in the 1990s. The persistent reflection of one character by another, on TV screens and in mirrors, started to disclose how characters were trapped in a mirror of reflections that was preventing radical transformation.
The Halloween and Scream franchises are deeply reflective of each other. And while one of the things the Scream franchise was known for was its self-reflexivity—its internal explicit references to other films—the Halloween franchise (beginning twenty years earlier) was actually the first to build into its narrative meaningful references to other horror films.
Halloween (John Carpenter, 1978) famously weaves Christian Nyby’s 1951 sci-fi horror film The Thing from Another World into its plot. Lindsey and Tommy are watching the film throughout the fateful Halloween evening—and it’s not just a throwaway reference. In the earlier film, the “Thing,” an alien from another planet, is called a “boogeyman on ice”—and is an utterly inhuman, emotionless killing machine. Michael Myers, called “The Shape” in the credits, is also, of course, an inhuman, emotionless killing machine, and the last exchange of the film is Laurie (Jamie Lees Curtis) saying to Dr. Loomis (Donald Pleasence), “It was the boogeyman.”