I've decided she's just really awkward.
Anyway, Monday she was outside (honestly, I've spoken to the woman maybe 6 times since I moved in two years ago)... so I approached her and told her that I've had chickens since last summer. And then I gave her some eggs... and waited to see what would happen... and she was SO excited!!! She even came over to meet Darlene and Maria (Cheeps is broody right now, so she remained invisible inside the coop).
Fears relieved, the hens haven't made any enemies... fingers and toes crossed as I wait for the other neighbour's house to sell.