[3] Herron began her career writing and directing short films, such as Frank and Rest Stop.

In August 2019, it was announced she would be directing and executive producing the first season of the Disney+ series Loki.

[3][7] In October 2023, it was announced that Herron and Briony Redman would be writing an episode of Doctor Who.

[9] In March 2024, it was announced that Herron will direct a film based on The Sims video game franchise and will co-write with Briony Redman.

[12][13] She attended the University for the Creative Arts in Farnham, where she studied Film Production.