Before launching her acting career, Mauzy worked in
New York City,
Virginia, and
North Carolina in stage productions of classic plays such as
A Christmas Carol,
Snow White and
Macbeth. In 1998, Mauzy won the Anna Wentworth Award for "Best Child Actress" for her role as Annie Warbucks in the production of
Annie at Showtimers Theatre in Roanoke, Virginia. She also played
Lizzie Spaulding on the
CBS soap
Guiding Light from October 2000 to August 2002. She has also guest starred on
CBS's
CSI: Crime Scene Investigation,
CSI: NY and
NBC's
Law & Order: SVU. She played the role of the rich
Phoebe Forrester on
CBS soap opera The Bold and the Beautiful from July 2006 until December 2008, when her character Phoebe was killed off. In July 2008, MacKenzie was cast as Ilse in the 1st National Tour of the hit Broadway musical
Spring Awakening. MacKenzie turned it down in order to be in the Broadway musical,
A Tale of Two Cities. Mauzy played
The Seamstress in the musical, which was executive produced by Barbara Russell and Ron Sharpe. The play, which cost $16 million to produce, closed on November 16, 2009, after 33 previews and 68 regular performances. Mauzy joined the Broadway cast of
Next to Normal, temporarily standing by for
Jennifer Damiano as Natalie Goodman. She then succeeded
Meghann Fahy as the standby for Natalie, with Fahy replacing Jennifer Damiano as the full-time Natalie. Mauzy stayed with the Broadway production (going on at various times) until the Broadway production closed on Sunday, January 16, 2011, after 21 previews and 733 regular performances. She starred in the musical,
White Noise, which is, in part, based on a real life white supremacist pop duo,
Prussian Blue.
White Noise played a limited run at the Royal George theater in
Chicago, IL. The play, presented by
Whoopi Goldberg, opened on April 9, 2011, and received mixed reviews and audience feedback. It closed ahead of schedule on May 15, 2011. Starting October 26, 2012, Mauzy had a featured role in
Michael John LaChiusa's musical
Giant at
The Public Theater as Claire "Luz" Benedict. In 2014, Mauzy landed a recurring role in the ABC television drama
Forever, playing Abigail, the late wife of the character Henry Morgan (
Ioan Gruffudd); Henry was a 200-year-old immortal and he married Abigail after they met during World War 2, with their relationship being portrayed through flashbacks. In 2016 Mauzy was cast as
Linda Kasabian in the Lifetime television film, ''Manson's Lost Girls'', alongside
Jeff Ward, Eden Brolin and
Greer Grammer. ==Filmography==