Gable's television career began in 1996 when she was recruited onto the writing staff of the first season of Joss Whedon'sBuffy the Vampire Slayer. She (and her then-writing partner Thomas A. Swyden) wrote two of the twelve episodes for the season.
In 2019, Gable joined other WGA members in firing her agents as part of the Guild's stand against the ATA after the two sides were unable to come to an agreement on a new "Code of Conduct" that addressed the practice of packaging.[2]
Upon discovering that she was earning ⅔ of what her fellow male executive producers were making, Gable became vocal in the #NotWorthLess social media movement, which called for the end to payment inequities between white, male Hollywood writers and producers, and their female, non-white counterparts.[3]
In November of 2022, Gable, a board member of the Writers Guild of America, was named as a member of the committee that will negotiate the guild’s contracts amidst the threat of a writers strike. [4]