A disk hoovered above the house I was staying at and then shot quickely out of sight.

I was visiting an old roommate in New Jersey.  I had move out of state two years before.  She's the only one that knew about my reocurring nightmares.  I was discussing the fact that I hadn't had them since I left New Jersey.  It was my second day back since I moved.  I told her I hadn't even thought about them till last night when I had them again.  I use to dream of being in my crib and these small people would come right thru the walls and surround me.  I was unable to move.  As I was talking about it, we saw a bright light coming thru the livingroom window.  We went out side and looked up only to see a very large craft just hoovering above her house.
We watched it for about 2 minuets before it began to move away very slowely, then it shot up and disappeared so fast.  We knew nothing on earth could move that quickely.
I looked at her and said, "I didn't see anything, did you"?  She said, " me either".
Neither one of us have talked about since.  I have never had the nightmares again.
Date may be approximate.  PD