Sarangerel "Sara" Shields (nee Ganbaatar) was Altansarnai Ganbaatar's twin sister, the wife of Anderson Shields, and the paternal grandmother of Angelina Kudou Shields. She was, according to her sister, very studious and did not like athletics. However, it has also been shown that Altan and Sara were extremely close.
Altansarnai Ganbaatar- Sarangerel and Altansarnai were apparently very close to each other, despite their nearly opposite personalities. Altan apparently tried to dissuade her from persuing Anderson Shields, though apparently she was not successful because the two eventually married.