She is a devout born-again Christian from East Texas. She was married for 20 years prior to her husband's passing in , at least near 13 years before The Big Bang Theory began in September Mary was born on January 13, to Constance and Charlie Tucker.
She has two brothers Carl Tucker and Edward Tucker. Mary spent much of her youth as a typical smoking, drinking, promiscuous wild child. She had met George Cooper Sr. Later that night, they ended up sleeping together and she got pregnant with their first child George Jr. When she was in labor with Sheldon and Missy, Missy's birth had some complications. Fearing that her only daughter would die on arrival, Mary vowed to end her previous promiscuous ways and turn to fundamentalist Christianity, as Meemaw explained to her granddaughter.
David, Goliath, and a Yoo-hoo from the Back. The first episode of the series starts with the family enjoying supper. Sheldon , Missy , and Mary attended church. She tells another participant to mind her own business since her children are making a nuisance of themselves. When Mary confides in George about her worries about Sheldon attending high school, George quickly calms her down. She takes Sheldon for a short walk outside. Sheldon wants his bowtie the next day, so she looks for it.
George admits he had it, and she is dissatisfied with his revelation. She drives him to Medford High School and follows him for a bit. Mary, George, Ms. McElroy , Ms. Ingram , and Mr. Givens were summoned to Principal Petersen 's office. They want his parents to send him to a private school, but they can't since they don't make enough money.
She and her family pray and have dinner later that night. Pilot Young Sheldon. Mary was at Medford High School keeping an eye on Sheldon because she was concerned about him.
