Granite Mountain 3445ft, about 20 mile west of Kasaan. The Flagstaff Mine is located nearby. So the 1920 census should have the whole family on it. At the time in history, Alaska was divided into Judical district for enumeration purposes. So it might be the 1st Judical District where you have to look. If your 92 year old source is living, that would make it 1908/09 when she was born and 1914/15 when she came.