Migration mystery

My GG grandmother Kaja Iversdatter came to the US sometime after her husband Jens Hansen died in 1893. I have seen her first name spelled Kaja, Kaya, and Kaia. I have also seen her last name as Iversen and Iversdatter. Her father's name was Iver Christiansen even though Kaja's death certificate(1909 Minnesota) stated Kaja's father's name was Iver Iversen. I have not been able to find when she left on the Digitalarkivet site's Emigration List. Can someone help me solve this mystery?