Update on above. I told my wife a smart plug turned off today all by itself, and her comment was , "Oh, you noticed." She confessed she was "messin' with me" while out shopping, and saw the lamp was on in the TP-Link app and turned it off via the cell phone access!
I guess we are even now, because one day I was outside and made the Alexa app play a Tunein station on our Echo in the house. She said she jumped a mile high!