She likely traveled with her sister, Augusta Charlotta Backman. They crossed the ocean in 1865 on board the ship B.S. Kimball, as recorded on the ship register. Augusta was living in Utah in 1870, according to census records. Anna is located on 1880 census records in the household of H. B. Hanson.
Further research is needed to determine which company they traveled with.
Death date is confirmed by Find A Grave website with her surname as "Hanson."