Does your wife carry pepper spray/mace with her? My mother works for the post office and has had to use it on crazy dogs. Have you reported to the humane society that the owner has intentions of killing the dog himself should it bite someone?
She's very cute. Make sure she's fully vaccinated before you take her to parks, pet stores, etc. There have been too many parvovirus cases this year. Congrats on the new addition :)
You have a gorgeous dog. I'm glad to see he is a good size. There are breeders out there who are breeding "mini" labs, because people are becoming obsessed with making things smaller.