Lizzie was a former prostitute in Small Heath, Birmingham. When Thomas Shelby finds out that Lizzie is to be married to his brother John Shelby , he confronts her, offering her eight pounds to see if she is still a working prostitute. When Lizzie takes the money, thereby failing Thomas' test, he informs John, who asks Lizzie and then her family if it is true. Lizzie tells him Thomas is a "dirty liar," but her family says otherwise, telling him she still continues her work, but only with regular clients.
John comes to the conclusion that Thomas must have been a regular customer, which he later confirms, and then calls off the marriage.
Despite the unfortunate circumstances, Lizzie and John end up remaining friends. Lizzie is having sex with Thomas in his office. She admires the typewriter, telling him she also has one and is doing a correspondence course, where she is learning to type with her eyes shut. He places the money on the table, which she takes, before she tells him, "I wish just once you wouldn't pay me. As if we were ordinary people.
Later, once again in Thomas' office, he asks her to close her eyes and guides her over to the seat at the desk. He covers her eyes with his hand and asks her to type on a typewriter, "If winter comes, then can spring be far behind? With "no exceptions. Lizzie at The Garrison Pub opening. Lizzie was present at the grand re-opening of the Garrison Pub.
She is offered a light for her cigarette by Ar thur Shelby who is high on cocaine. Lizzie finds out that the job involves playing the role of a prostitute and luring a soldier named Field Marshal Henry Russell to a quiet place when the races begin. Though she initially resists, she does the job for Thomas.
