Her dates Oct 31 1849 to Apr 29 1905. She appears to be buried without any family members in a tiny township cemetery. On the findagrave.com website, you can see her under Louriston Township Cemetery, Chippewa County, Minnesota. Her memorial #71479307. I think her husband was August Engblom who married two more times after her death. August was born about 1854 in Sweden.
On the online Minnesota marriage index, I think she is Annie Alberg that married August Engblom on Feb 03 1884 in Meeker County, Minnesota. Given marriage date, Oscar being born in 1884 is probably more accurate than about 1883.