Lynn Shelton, an independent Hollywood filmmaker who directed Humpday and Little Fires Everywhere, has died Friday at 54.

Shelton’s publicist, Adam Kersh, said in a statement on Saturday that she died Friday in Los Angeles from an unidentified blood disorder.

Lynn Shelton had become the leading voice of the new American independent cinema movement. She caused waves with her low-budget films, then made splashes through her work on television including Mad Men, Fresh Off the Boat, The Mindy Project, and GLOW.

Following the news of her death, Hollywood filmmakers, showrunners and stars paid tribute to Shelton. Shelton's partner, comedian Marc Maron, indicated that the director collapsed after having been ill for a week.