Here is a death in North Dakota of an Andrew Vik who would be old enough to be Mabel's father.
You can get a copy of the death certificatehttps://secure.apps.state.nd.us/doh/certificates/deathCertSe...
VIK, ANDREW A 05/07/1954 Grand Forks MALE 81 Years 05/25/1872 North Dakota Grand Forks Purchase a Certified Copy
There is also a death in Minnesota
Date of Birth: na
Place of Birth: na
Mother Maiden Name: na
Date of Death: 18 Jan 1940
County of Death: KITTSON
Maybe there are church records in Grant county, for her baptism, or especially confirmation, which might tell where she was baptised. In Dakota?