Feste was born and raised in Palos Verdes, California. She has a sister. Feste attended UCLA. When her parents divorced, she spent summers at her father's in Texas. She earned a master's degree in Creative Writing and Screenwriting at the University of Texas at Austin and then studied Producing at the American Film Institute, from where she graduated in 2003. She worked as a nanny, waited tables and tutored to pay for her tuition. Following her graduation, she worked as an assistant at the Creative Artists Agency. She is married to Producer Brian Kavanaugh-Jones.
Also in 2009, Feste was hired to write a screenplay based on the novel You're Not You by Michelle Wildgen. Filming took place in December 2012. The film should be released sometime in 2013.
In May 2011, Feste was announced to direct an adaptation of Carolyn Turgeon's novel Mermaid: A Twist on the Classic Tale. The project is still in development. She directed the romance film Endless Love, a remake of the 1981 film. The film was released in February 2014. She will next direct Boundaries starring Vera Farmiga and Christopher Plummer for Stage 6 Films.
