Scarlett made an appearance in WWE as one of Adam Rose's various colorful costumed party-goers named the Rosebuds at the Payback pay-per-view on June 1, 2014. She made another appearance for the company on the December 26, 2016 episode of WWE Raw, where she lost to Nia Jax in a squash match.
In November 2019, WWE announced that they had signed Scarlett to a contract and that she was set to report to the WWE Performance Center that same month. On the April 8, 2020 episode of NXT, she was spotted along with her husband Karrion Kross sitting in a car, watching Johnny Gargano and Candice LeRae leave the arena after Gargano defeated Tommaso Ciampa, potentially hinting at the two’s first feud. She made her official debut as the valet of Kross on NXT on May 6, 2020. She continued to manage him throughout the rest of the year into 2021, including during his NXT Championship win at TakeOver: XXX. On November 4, 2021, Scarlett was released by WWE along with Kross.
On the August 5, 2022 episode of SmackDown, Scarlett, alongside Kross, returned to WWE by attacking Drew McIntyre at the show’s end. In the following months, she returned to the managerial role she had performed during her previous run in the company, while also starting to occasionally interfere in matches to help Kross win. In December 2022, Scarlett was involved in her first feud when she and Kross briefly feuded with Emma and Riddick Moss, which culminated in a mixed tag team match on the January 6, 2023 episode of SmackDown, where Scarlett and Kross would win in what was Scarlett's first televised match as a signed WWE superstar. On the June 16 episode of SmackDown, Scarlett teamed up with Kross again in another winning effort against AJ Styles and Michin.
In October 2023, Scarlett hosted NXT Halloween Havoc alongside Shotzi. On the December 22 episode of SmackDown, Scarlett and Kross appeared in a vignette, stating they had formed a new alliance. On SmackDown New Year's Revolution, Scarlett accompanied Kross in attacking Bobby Lashley and the Street Profits alongside the Authors of Pain and Paul Ellering, who officially made their return to WWE, confirming their alliance in the process. The feud between the two stables culminated in a Philadelphia Street Fight at WrestleMania XL. On the following episode of NXT, Scarlett made her return to the brand alongside the group, now known as The Final Testament.
During night two of the 2024 WWE Draft on April 29, Scarlett was drafted to Raw with the rest of The Final Testament.