Here is how I would be related to Anna Redwing.
My grandfather was James W. Garvie, of the Santee Sioux.
His father (my great grandfather) was James Garve (aka Tatanka Kanina) James ( Tantaka Kanina) was married to Anna Redwing.
So, Anna Redwing would be my great grand mother on my grandfather's side.
Hope this clears things on this issue.