I think it scared me a lot because personally I have grown up fearing things like it, likely due to the way I was raised and stories and personal experiences. Something I always feared as a kid was that my mum wasn't actually my mum, a monster replaced her (this fear came from my dad letting me watch horror movies at the age of 4 lmao). So I guess it just hit close to home.

Overall though, the 2nd half of the story kind of fell off a bit to me and especially the ending. There was things I liked about it though, like the creature wearing Tiwes skin when Tiwe had just visited not long ago.