Chica, you know, i'd have not had much sympathy either before it happened, but the reason you don't think "begging hustler" as you say, when she first comes to the door is because she says "Hello, sorry to disturb you - i'm Lisa from number 29, i'm really sorry that we haven't met before; i've been meaning to pop round and say hi every time i walk past ...." ...and that is exactly what a neighbour does. Nice ordinary sociable behaviour. So the reason she's good is that the alarm bells only start ringing in your head once you've already placed the event in the meeting-a-new-neighbour category, and it's not pleasant to accept pretty quickly that you have to pull it out of that happy place and plonk it into the horrible someone-trying-to-con-me category. I wouldn't like to think i was someone who's initial assumption when a genuine neighbour comes round to say hi is "begging hustler".