She states that only witnesses, ever, since Christ's time, went door to door.
Show her this scripture:
***
Rbi8 Luke 10:7 ***Do not be transferring from house to house.
(Do not move about from house to house - RSV / Do not move from house to house - NJB)
In the latter context of Luke10:7, how many "towns" (or "communities") have told JWs to stay away and yet they keep coming back? I remember going out in service with an elder who insisted on sneaking into a particular condo complex to knock on doors even though management told us to keep out. I hated that.
Edited to add: Back when I quit the JWs I'd talk religion a lot with my walking-encyclopedia friend, and one night at the bar (all too common for us back then) an "evangelical Catholic" overheard us talking and said he went door to door. Also Frank Toth, ex-longtime Bethelite, became pastor of a Church of God (Abrahamic Faith) and he told me his congregation would go door to door sometimes too.