Miller appeared in Paramount Pictures and Plan B Entertainment's adaptation of "The Lost City of Z" (2016), directed by James Gray, portraying Nina Fawcett, the wife of British geographer Percy Fawcett. "The New York Times" found her to be "wonderful" in her role, while "Time" described her as "luminous and astute". In Ben Affleck's period crime drama "Live by Night" (also 2016), Miller played the mistress of a notorious gangster and the love interest of a World War I veteran. In 2017, Miller starred in the drama "The Private Life of a Modern Woman", which was screened out of competition at the 74th Venice International Film Festival, and in a West End production of the Tennessee Williams classic "Cat On A Hot Tin Roof", at the Apollo Theatre.