She started by directing and writing plays for the Magic Theater, the Eureka, the Bay Area Playwrights Festival and soon moved on to national theater companies including Steppenwolf, La Mama, Circle Rep, the Women's Project, LATC, and San Diego Rep. Hébert's plays have been honored with two PEN Awards for Drama.
In 2000 she wrote a television film entitled All-American Girl: The Mary Kay Letourneau Story.
[citation needed] Later that year she began her career as an episodic director when she co-directed the third-season premiere, a documentary about 9/11, "In Their Own Words" alongside John Wells, for which they won a George Foster Peabody Award.
While working on Third Watch she adapted her original play Ruby's Bucket of Blood into a TV film for Showtime, starting Angela Bassett.
Hébert remained with the series as a director and helmed two episodes for the tenth season, "Shifts Happen" in 2003 and "Midnight" in 2004.
In 2011 she became involved with the series Rizzoli & Isles as a co-executive producer, writing the episode entitled "Brown-Eyed Girl".
Her next venture was the critically acclaimed series Boss, where she worked as a co-executive producer, writing two episodes, "Redemption" and "Clinch".
In 2013 and 2014, Hébert directed three episodes of Nashville,[4] "I Saw the Light", "You're No Angel Yourself" and "Your Wild Life's Gonna Get You Down ".