In 2006 she had a recurring role on the series Justice and starred in the 2007 movie In the Land of Women. Vega made appearances on the series Ghost Whisperer and ER in the late 2000s. Her best known role has been as Grace Florrick in the series The Good Wife since 2009. In 2014 she starred in the film Code Academy and she is scheduled to star in the upcoming movie The Case Against Sam. She won a Young Artist Award for Best Performance in a Feature Film – Young Actress Age Ten or Under in 2001 for The Family Man. Vega has been nominated for three other Young Artist Awards and three Screen Actors Guild Awards.