Its scary that most people do not know how dangerous it is when one fancies you or your family. They remind me of a cat and when it hunts. A cat will sit on one spot and just wait.. staring and waiting until the right moment comes along and them they attack.
I tell my daughter, who knows all about the history of this shadow being with us in our room. I tell her to ignore it, as if it feeds on energy and when you put it out of your mind and give it no power / attention, it usually goes away. Though it always seems to know when something happens in the house and negative energy is about, as if it looks at it like feeding time.
I have heard that they sometimes fall in love with humans. If it were my daughter... I would step in and make him leave. If he's not the hatman, then this may be some other kind of entity.