Enebak Grandmother

Anna Beate Bensen Enebak was born between marriages to Kristiana Throndsdatter (on 12/17/1883) and Bernt Kristiansen (Tohteeie?). Her mother was married to Hans Ellefsen Oien, had 4 children also married to Peder Iversen & had 4 children. I can find everyone except my grandmother on the Norwegian census. Have tried Berntsdatter as surname, along with Enebak name which the family had taken. I have no idea where the Bensen came from as there are no other children using it. I have been told she immigrated to US in 1901, but can find no records that may be her. Is Tohteeie a surname or farm name? Can anyone help me??