Sally Bush Mills is Sandy’s maternal great grandmother. She was Oglala Lakota and married Benjamin Buchner Mills. It is believed that he came from England. They were both present at the signing of the Ft. Laramie treaty in 1868. It is belied that she had close ties with Red Cloud as he requested that Ben Mills be made the Superintendent over what was to be known as the Pine Ridge reservation. She was also with Crazy Horse when he surrendered at Ft. Robinson. (Crazy Horse Surrender Ledger, P. 34, 64, 129, and Page 142) She was widowed at a young age.