I think that it has to do with ignorance! My friends husband did this god almost 10 years ago,She had a beautiful Cocker Spaniel(8 at the time)They had a terrible Marriage,Anyways she gave the dog to her sister(he insisted)He was just mad i think because the dog got more attention then he did,Well off goes Blondie,She lived only a month and a half after that.Ya know what he did he went out and got an Old English Sheep dog,There beautiful dogs,But......She had to get rid of her blondie For him to go get a dog that he has always wanted was it fair?No Blondie passed away and i truly believe that an older dog should not be rehomed any dog in that case,Runner is a beautiful girl i think it is time you get rid of him!That is like saying ok i don't want my kid anymore,He has a choice,simple like it or leave,My husband would never do that to me and if he did after all the years we have been together,He would be on the first train,bus outta here!Good Luck to you!