Incredible... It definitely has potential
From the moment when the music began I realised it was going to be worth watching. Then when the style of animation became clear, when the woman was in the manor, my thoughts started racing as I knew then that I wanted to watching this.
Although, I was mildly confused by the lack of emotion in the woman's face when things started to become a little strange. If that was you intension, leading the story on to show this woman is not whom we might think, then I'm sorry to of brought it up.
One thing I do wish to mension is the music at the end. For me it ruined the tension which the animation had created. Wheather it had that effect on others who watched it, I don't know. But you may wish to find that out if you are planning to use it again.
Overal I would say that it was a very well constructed animation and that I look forward to see what will happen next. Whether any of my criticisms proved useful, is your business.
Good luck to you for any other animation you create in the future.