"It was kind of back-to-back filming Birds... and filming this, so I was kind of like, oof, I need a break from Harley because she's exhausting." Interview with Entertainment Weekly, 12 July 2021.
The project is not a Quinn solo movie. Rather, it would focus on several of DC’s female heroes and villains, with names such as Batgirl and Birds of Prey surfacing. Article by Borys Kit for The Hollywood Reporter, 16 May 2016.