Director Lynn Shelton, who directed several episodes of the hit drama series Little Fires Everywhere on Hulu, has died at the age of 54.

The Hollywood Reporter quotes her publicist as saying she died Friday in Los Angeles of a previously unidentified blood disorder.

“She collapsed yesterday morning after having been ill for a week. It was not COVID-19. The doctors could not save her. They tried. Hard.” -Marc Maron, Shelton’s romantic and creative partner

The Seattle native made her directorial debut in 2006 with the indie film We Go Way Back. Over the past 14 years, Shelton wrote and directed eight feature films, including Your Sister’s Sister and 2019’s Sword of Trust, in which both Shelton and partner Maron appeared.

Besides the currently released Little Fires Everywhere, Shelton worked on a slew of popular television shows – among them: The Morning Show, Mad Men, The Mindy Project, The New Girl and Fresh Off the Boat.

Reese Witherspoon, who starred in Little Fires Everywhere and The Morning Show, shared her condolences online:

Shelton is survived by her former husband of eight years, Kevin Seal and their son Milo.