female adopted from Gladney 1924 adopted name Helen Stevens

I have recently discovered that my mother was adopted from Edna Gladis(Gladney) home in 1924 or 1925. Acording to her school records, her birth date is 9/20/1924. Her adopted name is Helen Stevens. She had at least one older sibling. She left home in 1954. I saw her only twice after that, (late in 1960 and early in 1961) so I don't know if she is still alive. My mom's adopted father was native american, so she probly was also. She had dark black hair, small very dark eyes, 5ft.4in. With a medium build.God bless all, Leonilda