Perhaps Louisa is Elizabeth, birth year roughly correct. 1916 and 1921 census list Louise.
1921 census Prince Albert Saskatchewan.
Lawrence Koslowski 41 Head
Frieda Koslowski 38 Wife
Louise Koslowski 17 Daughter
Agnes Koslowski 16 Daughter - baptised 16 September 1906 Reichenau, OstPreussen, Deutschland (Germany) married Mohammed (Jack) Allex - 1874 - 20 January 1973)
David Koslowski 14 Son
Thomas Koslowski 13 Son
Frances Koslowski 12 Daughter - married George Sarrazin (deceased `5 January 2011)
Frank Koslowski 9 Son
John Koslowski 7 son
Mike Koslowski 5 Son
Annie Koslowski 3 Daughter
Marie Koslowski 1 Daughter
https://central.bac-lac.gc.ca/.item/?app=Census1921&op=img&id=e0031244701916 census Prince Albert, Saskatchewan.
Laurence Koslouski 35 Head
Frieda Koslouski 32 Wife
Louise Koslouski 12 Daughter
Agnes Koslouski 11 Daughter
Paul Koslouski 10 Son
Antony Koslouski 8 Son
Frances Koslouski 6 Daughter
Frank Koslouski 3 Son
John Koslouski 2 Son
Mike Koslouski 0 Son
https://central.bac-lac.gc.ca/.item/?app=Census1916&op=img&id=31228_4363970-01042Sandra
added -
Agnes Korlowski
Baptism Date 16 Sept 1906 Reichenau, OstPreussen, Deutschland (Germany)
Father Lorenz Korlowski
Mother Friederike Korlowski
Author Evangelische Kirche Reichenau (Kr. Osterode)
City or District Reichenau
FIND A GRAVEFrances E. Sarrazin 1909 - 15 January 2011
Prince George Municipal Cemetery
Prince George, Fraser-Fort George Regional District, British Columbia
PLOT Section 45w ; Block 4; Plot 446
https://www.findagrave.com/memorial/110440053/frances-e.-sarrazinspouse George David Sarrazin - 1908 - 2 January 1979
https://www.findagrave.com/memorial/110439626/george-david-sarrazinMohammed Allex - spouse of Agnes Koslowski/Allex
The Vancouver Sun
Vancouver, British Columbia, Canada
Mon, 22 Jan 1973 Page 34
https://www.newspapers.com/article/the-vancouver-sun/138584329/Mohammed (Jack) and Agnes has a daughter Evangeline Eva McInnes passed 24 April 2006 (with photograph)
Star-Phoenix
Saskatoon, Saskatchewan, Canada
Tue, 25 Apr 2006 Page 25
https://www.newspapers.com/article/star-phoenix/138584119/Mohammed (Jack) and Agnes had a daughter Doris (1928 - 2011) married to Robert Joseph Save
Obit -
https://www.mapleridgenews.com/obituaries/doris-save-2591578