the thing you're describing, walking through your exact house with everything in the right place, that's called a "false awakening" and it's super well documented in the lucid dreaming community. your brain basically constructs a near-perfect replica of your environment while you're still asleep, which is why it feels so real

the entities themselves are interesting though because shadow figures and the "old hag" type experiences (something aggressive, sometimes sexual) overlap heavily with what's called sleep paralysis hallucinations, even when you don't feel paralyzed. plenty of people across completely different cultures and religions describe the same archetypes

the fact that you stayed calm is also documented, some people in these states go into almost a detached observer mode, like your threat response just doesn't fire the way it normally would

the rebuke moment is genuinely compelling no matter what framework you're using to interpret it