I am sorry for you loss. And yes, I get it. It's almost as if you expect them to walk right through your door despite knowing the truth. It's truly a process to get one's self used to the idea. I lost my mum just before Thanksgiving of this past year and I found myself half way out the door one day before I checked myself, and turned around and went back in and hung up my coat and truck keys.
We go from that reality to memory retention I think