Actually, she didn't even prove that. She proved she *might* be 1/1024 south American. That was the DNA used for comparison because the "researcher" had no American Indian DNA. Researcher in italics because I have reservations about the qualifications and ethics of a researcher that says S. American DNA qualifies as American Indian DNA.
This is a steaming pantload from start to finish.
The DNA Bustamante used came from Colombians, Peruvians and Mexicans. Not a strand came from a Cherokee or any other tribe.