For the past 15 years, Casey has been directing and producing independent documentary films, highlighting otherwise untold stories. Since 2004, she has directed and produced numerous documentaries, including: Mongolia: Land Without Fences, which aired as a FRONTLINE/World "Rough Cut" in 2007 and the award-winning The Rising Tide: Kiribati, which detailed the effects of global warming on Kiribati, a small island developing nation in the Central Pacific. In 2008, Casey received a Fulbright grant to produce a feature length documentary in Buenos Aires, Argentina. The result was Los Famosos, which follows a family of people who nightly pick through the city's garbage in search of recyclable material to sell. She spent 2010 in the Dominican Republic as the First Unit Director of Pelotero, an award-winning New York Times’ Critics Pick. In addition to the feature film, Casey worked on a groundbreaking series for GlobalPost while in the DR. In 2011, she worked in San Francisco as an assistant production coordinator for The Two Escobars, an award-winning ESPN 30 for 30 documentary.
She premiered her feature documentary directorial debut The Organic Life in 2013 to sold-out crowds at the 36th Mill Valley Film Festival, where it was included in the prestigious Active Cinema circle. The film won Best Documentary Feature at the Santa Cruz Film Festival, screened at the Minneapolis St. Paul International Film Festival and others as national online distribution was rolled out in April, 2014 in partnership with FilmBuff. Casey has worked in Richmond, California for a progressive youth organization, RYSE, where she taught video and mentored award-winning emerging media makers and now teaches at California State University, East Bay.