SD-7; If this is A sign from above, all I can say, God must be Desperate..
It's also possible that the elder was simply doing the territory, and forgot to mark you down as being home. The the 2 sisters are doing the territory, doing not-at-homes, and called on you by mistake.
Or they were merely doing the territory, whereas the elder called on you on purpose.
I try not to read too much into anything.