First of all — you have a beautiful logo :)
I enjoyed your take on the theme and really wish it was a full game, not a demo!
The art is impressive, I especially enjoyed the monsters :) It is an interesting visualisation (though I believe it is not only that) of a sleep paralysis.
In terms of a story I think it has a good build up and makes you quite engaged to learn what's coming next. Now I want to learn about the pendant and if what happened was connected to it :) I also liked the way you created a character who feels like no one understands her, but step by step she learns to connect with people surrounding her and is no longer afraid of her emotions.
One thing that I'd like to comment on is that sometimes I got stumbled upon some phrases, that didn't look that necessary for your story. I believe they just became overused, so sometimes they feel a bit unnatural. It is something like "now is not the time", "how could I forget", "just you and me", "we've talked about this" — as I could see, without them the story wouldn't lose anything, maybe even got better :)