Well, a neighbor wouldn't have to be "snooping" to see you walking in or out of the house or in your yard or on your porch. Or even seeing you walking past a picture window. Some neighbors might see a "strange woman" in your house and ask about it. That is not really being "nosey".
It occurs to me that lies often have a way of coming back to haunt the person doing the lying. Saying that it was your sister wouldn't work if you don't actually have a sister. A cleaning lady would not likely be wearing heels. Perhaps saying it was someone giving an estimate for decorating or a security system would work.
Ideally, we won't find ourselves in this situation, but it pays to have a plan, just in case.
