On December 21, 2023, it was reported that Dombkowski had signed withWWE.[10] She made her debut on the January 16, 2024 episode ofNXT as aface under the ring nameWren Sinclair, where she replaced an injuredCora Jade in anNXT Women's Championship #1 Contender's battle royal, eliminatingLash Legend but was eliminated byKiana James. The following week, Sinclair had her first televised singles match losing to Lash Legend and was attacked after by Legend andJakara Jackson untilFallon Henley ran out and saved Sinclair.[11][12] On the February 6 episode ofNXT, Sinclair teamed with Henley in a losing effort to Legend and Jackson. After Sinclair got into a heated confrontation withRoxanne Perez backstage on the February 13 episode ofNXT, she fought Perez the following week but was defeated.[13][14][15] AtNXT Stand & Deliver on April 6, NXT general managerAva announced the newly createdNXT Women's North American Championship, and Sinclair went through as one of the top 12 participants from the preliminary combine to compete for a spot in the six-womanladder match to crown the inaugural champion atNXT Battleground. On the May 28 episode ofNXT, Sinclair fought eventual inaugural championKelani Jordan for a spot in the ladder match but was defeated.[16][17]
After witnessing theNo Quarter Catch Crew (NQCC;Charlie Dempsey,Myles Borne andTavion Heights) taking outDamon Kemp in the NXT parking lot,[18] Sinclair began to coerce Dempsey into joining the stable.[19] At Week 2 ofNXT: The Great American Bash, she defeatedKendal Grey in an initiation match to join NQCC, turningheel for the first time in her WWE career.[20] Sinclair helped Charlie Dempsey to win theNXT Heritage Cup for the second time by using underhanded tactics on the August 13 episode ofNXT, thus cementing her heel turn.[21] On the August 20 episode ofNXT, Sinclair took part in asix-woman gauntlet match to determine the number one contender forRoxanne Perez'sNXT Women's Championship atNo Mercy, but was eliminated bySol Ruca.[22] On the 24 September episode ofNXT (which marked its last episode on theUSA Network), Sinclair competed in her first championship match in WWE when she took onKelani Jordan for theNXT Women's North American Championship, after having confronted and slapped her backstage the week prior following Charlie Dempsey's advice to "go make a name for yourself". However, Sinclair failed to win the title.[23] On the 15 October episode ofNXT, Sinclair facedStephanie Vaquer in the latter's in-ring debut, where she would lose.[24] AtNXT Deadline on December 7, Sinclair competed in theIron Survivor Challenge to determine the number one contender for the NXT Women's Championship, after having qualified in a last chance fatal 4-way match. She would go on to lose the match.[25]
FollowingNXT Battleground 2025, Sinclair and the rest of No Quarter Catch Crew effectively turnedface due to the outpouring support for Myles Borne during hisNXT Championship match againstOba Femi despite failing to win the title.[26]