[4][7] Before landing her role in Coronation Street, Fallon had several part-time jobs, including working at Subway, Next, New Look, and in the Merrie England bar on the Blackpool North Pier.

[9] A returning character, Bethany had been played by child actors Mia Cookson (2000) and twins Amy and Emily Walton (2000–2007), before Fallon took over.

"[7] The Guardian's Hannah Verdier thought that she was "perfect" for the role and that her comedic skills were a "reincarnation of Joan Rivers, only with a Mancunian accent"; however, Steven D. Wright from the same newspaper felt that she was "far too old for her part.

[13] Barbara Ellen of The Guardian found her performance "immaculate", while Daily Mirror's Ian Hyland wrote that scenes which saw Bethany survive a kidnapping to testify in court against her abuser gave Fallon "another chance to show what a fine actress she has become.

[16][17][18] Fallon left Coronation Street at the end of her contract in 2020 to pursue other projects,[19] and her final appearance aired on 4 March 2020.

[24] Fallon starred as George alongside Pearl Mackie in the 2021 Audible horror series Sour Hall, set and recorded on a Yorkshire farm, which tells the story of a lesbian couple tormented by a Boggart.