Sister-in-law of Asa Taccone.
Daughter-in-law of Tony Taconne.
Member of the 'Academy of Motion Picture Arts and Sciences' (AMPAS) since 2016.
Has a son, Wylie Red Heller Taccone (b. December 12, 2014), with her husband Jorma Taccone.
Has directed only three feature films, the last two of which have resulted in three of her actors receiving Oscar nominations: Melissa McCarthy, Richard E. Grant, and Tom Hanks.
Her younger brother Nate Heller has composed the music for all three films Marielle has directed.
Graduated from UCLA.
Sister of Emily Heller.