I believe your date is correct.
After Robert's death Julia Ann emigrated to Kansas (1901) and joined her Father (James Porter) and Mother (Ann Pickering) who had emigrated to Kansas is 1874.
They settled primarily around Topeka, Kansas and surrounding towns.
The Service line ends with no children after two grandchildren -- but James Porter's line continues to this day and I am in touch with those living relatives who are in Topeka, Idaho and Arizona amongst other places.
Eleanor Ann Service is my great grandmother on my father's side and she did not go with her mother Julia Ann and remained in Liverpool
My email is firstname.lastname@example.org