Yes, seems JS was referring to mail being delivered to their home in error. Here's the
CNN.com - Transcripts from AB's show:
BANFIELD: Can I ask you about the Closs family? I mean, this is just such a horror that is been visited on them. I think most people are wondering, what were they like?
SMREKAR: They were very quiet people. We only saw them come and go from their home.
We took mail up to them that got delivered to us, and they didn`t even want to come to the door. They were just quiet, preferred I guess to be alone. You didn`t see them out in the yard doing anything. At least we didn`t.
(Random thoughts: Perhaps JS saw both cars in the driveway, and thus assumed they were home. Or saw lights on. There could be a variety of reasons how she knew they were home, to think they were not answering. But interesting to note JS's observation nonetheless considering there is speculation of a perp coming to the front door unannounced in the middle of the night. Would JC/DC have even gone to the door in a middle-of-the-night situation like that, if it is to be believed that they wouldn't even come to the door for a neighbor, delivering mail? Random thoughts. Jmo)