What is the main reason Dylan uses the word "lonesome" to describe Hattie Carroll's death?

Bob Dylan calls the murder of Hattie Caroll lonesome because there was no true justice for her, she was "abandoned" by the law. Hattie Caroll was a 51-year-old black waitress, and her killer, William Zanzinger, was a rich man. He killed her at an annual dance in Baltimore for wealthy people. Injustice is the engine of the song: he was sentenced to only six months in jail for involuntary manslaughter.