Vadso, Norway

I know that Elise F. Keloniemi, 23, left Vadso, Norway with her two children, Marja 3 and Axel an infant. She was to join her husband, John Keloniemi (Niemi) in Calumet, Houghton, Michigan. From the Ellis Island records on the ship "Majestic", out of Liverpool, date of arrival, July 25, 1900, her name and the childrens appear, and then crossed out, on the manifest.. Then she and the children appear on the manifest for the "Oceanic", arriving the 1 Aug, 1900 from Liverpool to Ellis. How would she have gotten from Vadso to England? Ship, but what port would she have left from? Why would she have left on a different ship ? I can't find him on any ships, but still have a lot of searching to do. What a terrible experience for her. From the manifests, I don't recognize any one who might have been with her and the children and she doesn't appear to have any money on the "Oceanic". This is my first post, and hope I have followed the rules.