Is Wilhamena the same child as Aurena listed in the 1901 census?
Aurena was listed in the 1901 census, but Wilhelmina was not. Conversely, Minnie was listed in the 1911 census, but Aurena was not. They were young enough that they both should have been enumerated with the family, if they were siblings.
28 155 Becker William M Head M May 1852 58 Germany 1870 1874?German Canadian Babtist (sic) Farmer 29 155 Becker Tena F Wife M Dec 1853 57 Germany 1870 GermanCanadian Babtist (sic) 30 155 Becker Charlie M Son S Dec 1890 20 - German Canadian Babtist(sic) Farmer 31 155 Becker Minnie F Daughter S Apr 1893 18 O(ntario) GermanCanadian Babtist (sic) 32 155 Becker Martha F Daughter S Jul 1897 13 O(ntario) GermanCanadian Babtist (sic) 33 155 Becker Lena F Daughter S Nov 1898 12 O(ntario) GermanCanadian Babtist (sic)