George Cooper Sr.'s Sister

Sheldon's aunt and George Cooper Sr.'s sister and her name is seen on the family tree on Sheldon's board in "The Cruciferous Vegetable Amplification".
She is also married as seen on Sheldon's board.
==Families==
* Father: Mr. Cooper
* Mother: Mrs. Cooper
* Brother: George Cooper Sr.
* Sister: Ruth 
* Sister-in-law: Mary Cooper
* Nephews: Sheldon Cooper, George Cooper Jr.
* Niece: Missy Cooper
* Husband: Unnamed
Category:Mentioned-only Characters
Category:Cooper Family
Category:Season 4 (The Big Bang Theory)
Category:Sheldon Cooper
Category:Reference Materials
Category:Female Characters
Category:Amy's Family