I've been spotted... I think

Yesterday, I was walking back in the evening and the wife was out on the sidewalk, sweeping up some of the clippings from pruning the bushes. She glanced up as I was approaching, but not being uber social with strangers, she went back to sweeping. I was thinking of saying hello as I passed, but felt a little odd, carrying a duffle bag with a cat in it (we were returning from the vet). That, or I'm just shy and chickened out. I walked a few more feet to my sidewalk and turned down. I think that's when she realized I was the neighbor (do keep in mind that I think I see alot more of them, then they of me). But than later that evening, after cooking dinner, I was sitting down in the back room to watch tv and eat. I was right near the window. I looked out the window just as she coming out the back door and noticed her glance up at me briefly. I've been spotted. It was such a brief moment, I'm not sure if it occurred. And I wasn't watching her - I was watching the tv - so I think she felt like she was invading my privacy more than I hers. She than went on to talk with her son for awhile in the back - she must have intercepted him while he was heading into the back apartment. Strange body language - a bit formal. So I'm not sure it's the son anymore. Or maybe it is her son, but only by marriage. I don't know. He does look alot like the daughter.