Mack was born in Germany but moved with her family to Southern California at age 2, beginning her acting career at 4 with print work and commercials. At 7, she began studying at The Young Actors Space in Los Angeles, where she currently attends classes in improvisation and scene study.

Most recently, Mack starred in the short-lived television comedy Opposite Sex. Previously, she got the chance to display her comedic flair as a series regular on Hiller and Diller, working alongside comedy greats Richard Lewis, Kevin Nealon and Eugene Levy. Mack guest-starred in a highly rated and critically praised episode of The WB family drama 7th Heaven portraying a teen caught up in the devastating trend of "cutting." She can also be seen on Kids' WB! this fall in two episodes of the new R.L. Stine series The Nightmare Room.

Mack has starred in many prestigious movies for television, including the recent cable film My Horrible Year directed by Eric Stoltz and starring Karen Allen, Mimi Rogers and Stoltz. She also appeared in A Private Matter with Sissy Spacek and Aidan Quinn, Living a Lie with Peter Coyote and Jill Eichenberry, Unlikely Angel with Dolly Parton and Roddy McDowall, Stolen Memories: Secrets From the Rose Garden starring Mary Tyler Moore and Linda Lavin and A Mother's Revenge.

On the big screen, Mack appeared in Camp Nowhere and starred in the video release Honey, We Shrunk Ourselves.

An accomplished dancer and singer currently living in Los Angeles, Mack enjoys reading, going to movies and plays and spending time with her friends and family.