If someone came to my door about something in my yard and I told them I was not interested in parting with the item and then they came back to talk about it more, I am afraid there would be a problem. However if they came back and handed me a note giving me an opportunity to take action on my own terms, I would not get upset at all.
And the size of a person is not an issue either, so don't worry about it. And I never got the impression that the house was out in the pouring rain getting ruined from your first post. You said overcast day and it was on a porch. Didn't someone here put a house out for halloween on the front porch? An orchid?