I'm not going near the melodrama here but my heart is heavy for this dog, so neglected. Is there any chance that you could get ownership of the poor girl? At least ask why the neighbour wants the dog. If they just want a dog to put off trespassers, why not ask to be the official owner and set up a gate, so she can come into you at night and for meals. It does make me so angry. I feed my neighbours sheep where I am and if I could just rule the world for a month... I am seen as insanely soft - but believe me, if I could be a smiting dog, I would be smiting with shock and awe and it would all be human directed.