What was it you both saw? Sorry, but I never read your original description nor do I know where to find it.
A coalescence emerging from shadows in moist air and dematerializing into light might indeed appear to move as though "consciousness-less."
Environment can have remarkable effects. I also haven't asked for the specifics as to who saw it first, and/or who told whom; or whether you both saw it independently of the other. Or who identified it as the image of a relative.
I see. Sorry, how long ago was it?
Sorry about the interrogation session; I was just curious, I must have missed when you posted it before.
I wouldn't call your experience a hallucination, but I do think it's less than a ghost.