I am sorry about your loss. How hard after 20 years to say goodbye. I know that this will probably not comfort you, but I had a 18 yr old that had what the vet believed to be a stroke and was put on a steroid treatment also. She continued to live until age 20 but her quality of life really was not very good after that time. I'm certain that she is smiling down upon you for all the love and care you provided her all of these years. You will see her again