If they have been told to only write to people they know then I'm not sure that they are sticking to that. I do know a few JWs but not the lady who wrote to me . That isn't their normal style is it ? The family who live 3 doors down from me are Witnesses but they nor any other of the local JWs canvas this area when they are door knocking. They seem to deliberately target areas where they don't live . I suppose because it would be awkward to live cheek by jowel with someone who has told you to " go forth and multiply " . Or worse living close by someone who has managed to put doubts into your mind . The elders wouldn't like that would they ?
Jan