Born in Zaragoza (Spain). In 2013 Pilar began an MFA in filmmaking at Film Factory (Sarajevo) under the leadership of Hungarian filmmaker Béla Tarr. Before, she worked for several years as a screenwriter and film teacher. Her short films have been screened at festivals such as Warsaw International Film Festival, Sarajevo Film Festival, Doc Lisboa, St. Louis International Film Festival, Festival de Cine de Huesca, Festival de Málaga, or Busan International Short Film Festival, among others. She has been Berlinale Talents 2017 and Sarajevo Talents (Pack&Pitch) 2016 alumni.
Her first feature film LAS NIÑAS, was premiered at the Berlinale 2020 and won Best Film at Malaga Film Festival. The film won four Goya Awards including Best Film, Best Original Screenplay, Best New Direction, and Best Cinematography.