Wow what an interesting dream...
Could be one of those spirits that you regularly photograph
through your window looking at you in a multi-dimensional way.
Looking into your sleeping subconscious in a way knowing it was Halloween and you would be vulnerable on such a night.
Once you (your sleeping subconscious) remembered it was Halloween your fear triggered your automatic defences (Fight or Flight) to come up and the spirit was interrupted. Its resonance with you was interrupted. It then tried to get closer sensing you were going to go inside and leave it out there alone again. The chastising could be your subconscious guilt for putting yourself in that situation in the first place.

Sometimes I think its better not to remember all the way through a dream sometimes..!!