Mark in Ohio
She sounds like a pretty nosy little chippie to me, you should have told her to go spear her own fish. Or tell her you are a HD cart consultant and your consultation fees are $200/hr against a $500 retainer. Or at least tell her she was standing in a customer area and she would have to move. Or “no habla ingles…”
She could have been an innocent ditz, or she could be just posing as such from the taxation dept (believe me, I have seen lower stings setting up at antique shows by undercover state officials), or maybe just casing out your biz so her dude can roll up and jack your earnings.
No, you are not out of line for being annoyed by someone asking for a free map to the happy hunting grounds.