I have to admit that this story is kind of rushed and everything is in long, strung together paragraphs, which takes away from what could be a good horror. If you had taken things more slowly and had better structure and grammar, this could be a really compelling story.
Read the story now
What I'm saying is that while the plot, characters, and general circumstances throughout this book are good, the way you went about writing it really wasn't.
You also had some technical errors in the plot that didn't make sense, like how Matt got out of the hospital after a few hours(in real life they would have kept him at least overnight) and you called paramedics "ambulance people".
I recommend getting an editor to fix your grammatical, pacing, and technical errors. If you did that, I think The Haunting Daunt would be a really good horror.