Isla is a Toronto-based sex worker. As a teenager, she was a member of the Canadian taekwondo team and an all-around athlete. In 2011, while a University art student, she entered the BDSM / kink community, where she eventually taught and performed shibori Japanese suspension art. In 2013, she became Roxy Foxglove, a muscular, blue-haired, punk, camgirl on Chaturbate. Using the moniker Tifereth, she worked as a dominatrix/escort and as a sadomasochistic porn performer on the Kink.com site. In 2019, she re-branded as Isla David, a curvy, high-end independent escort, offering a girlfriend experience. Isla has been an OnlyFans creator since 2020, and she also does Whisky reviews on her YouTube channel, where she says that the whisky screams "put me in your mouth". In 2024, she featured in a Rolling Stone article titled "4Chan Chuds Used AI to Clothe Her. She Fought Back". Isla is friends with fellow escort Madison Winter.