Looking for Great Grandmother and her family

My cousins and I have reached a dead end with Marie or Mary huser. We have her as born in 1865 in Gran Hadeland. I have a 1910 census with her arrival in the US at 1884. We know that she died in Fairview South Dakota 1938 at the age of 73. She married Lage (Leonard) Loken 1890. The possible names she would have used in Norway would have been Marie Huser, Or Marie Larsdetter. We have parents listed for her as Lars Huser and Kari Lunne. We are trying to figure out how she got here and if her parents names are indeed that and if they had parents.