Cooper was a staff writer for Grimm for two seasons and went on to be a writer and co-producer for The 100, American Horror Story, Luke Cage, Jupiter's Legacy, Witches of East End, and Chambers. She wrote the horror film Malignant, released in September 2021. She is the screenwriter of the upcoming sequel to the horror film The Nun, as well as the 2022 horror film M3GAN and its sequel. Cooper was announced as the showrunner for the upcoming HBO Max television adaptation of the novel Monster by A. Lee Martinez.

Filmography:

Film writer

• Hell Fest(2018)
• Malignant(2021)
• M3GAN(2022)
• The Nun 2(2023)
• M3GAN 2.0(2025)