No, really,...your friend never received this in the mail, and she should never answer the door for anyone she does not know or expect.
Good idea. In fact the survey was sent to an obsolete mailing address that is no longer the street address of her house. Post office had her change it a few years back due to some obscure zoning issue, I believe. So she can make a case that she didn't receive it. Even the 9-digit zip code is wrong.