On the 6 November 2018 episode of "SmackDown" from Manchester, England, Cross made her surprise main roster debut on SmackDown by answering an open challenge from WWE SmackDown Women's Champion Becky Lynch, who defeated her in a non-title match. On the 17 December 2018 episode of "Raw", Cross was advertised as one of the six NXT wrestlers about to be moved up to the main roster. On the 14 January 2019 episode of "Raw", Cross made her Raw debut, teaming with Bayley and Natalya in a winning effort against The Riott Squad (Liv Morgan, Ruby Riott, and Sarah Logan). At the Royal Rumble, Cross entered her first Royal Rumble match at number 8, lasting nine minutes before being eliminated by The IIconics (Billie Kay and Peyton Royce). On the 4 February episode of "Raw", Cross and Alicia Fox were defeated by The Boss 'n' Hug Connection (Bayley and Sasha Banks) in a match to determine the final Raw entrants in the tag team Elimination Chamber match to determine the inaugural WWE Women's Tag Team Champions at the Elimination Chamber event. On 8 April (aired 24 April) at Worlds Collide, she took part in a triple threat match for the NXT UK Women's Championship, which was won by defending champion Toni Storm.