Bruh, this can actually tackle religion.
When I was still a child my parents always teach me to pray everyday, talk to god when I have a problem and I even carry a rosario everyday. At first it feels a bit fcking weird but the more I do it the more it feels real that I even got angry when other people talk bad about it.
After growing up and start questioning fcking everything, I realize that things like nature, objects and superstition will feel real the more you interact with it. Like how this girl think that the stuff doll is alive because she spends more and more time interacting with it.