In the 1937 Indian Census Roll Mala Pope's mother Helen and her family:
Indian Census Roll
Census of Non Reservation Shoshone Area
Northeastern Nevada
Reservation of the Carson Agency jurisdiction
as of January 1, 1937, taken by Alida C. Bowler, Superintendent
Hernandez Caterino Mexican
Hernandez Nora Shoshone 1/2
Hernandez Helen Shoshone 1/4
Hernandez Leo Shoshone 1/4
In the category "Allotment, annuity, and identification numbers" Nora, Helen, and Leo are listed "Unal." which I assume means "unalloted".
Nora's entry was later crossed out and handwritten words added "Died 2-15-38"
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The 1940 Federal census also captures this family. Nora is listed as alive in this.
Caterino is listed as Mexican from Mexico.
Nora, Helen, and Leo are originally listed as Mexican from Nevada, that was later crossed out and W was added in for them.