Langer married attorney Charles Courtenay, Lord Courtenay, the son of The 18th Earl of Devon, in a civil ceremony in 2004. A formal wedding took place on April 30, 2005, in Los Angeles, California. Until the death of her father-in-law, Langer held the courtesy title of Lady Courtenay. Following his death, and upon her husband's assumption of the title '19th Earl of Devon', she assumed the title of Countess of Devon. In January 2014, Langer and Courtenay permanently relocated their family to London, and to the family seat at Powderham Castle in May 2015. The couple have two children, a daughter and a son:
In 2011, after a six-year acting hiatus, Langer appeared in 14 episodes of Private Practice in the recurring role of Erica Warner. She left the show in 2012 following the death of her character.