Moon returned on the June 21 episode of "NXT" and defeated Peyton Royce. On August 19 at , Moon was once again defeated by Asuka, who successfully retained the NXT Women's Championship. In August, Asuka had to vacate the NXT Women's Championship due to an injury. On November 18, Moon won the vacant NXT Women's Championship in a fatal-four way match, defeating Royce, Nikki Cross, and Kairi Sane. Asuka then made a surprise appearance and handed the championship to Moon. On the December 27 episode of "NXT", Moon successfully defended her title against Sonya Deville. After the match, Moon was confronted by Kairi Sane, who was then attacked by the debuting Shayna Baszler. At , Moon retained her title against Baszler, despite suffering a (kayfabe) arm injury. The following night, she competed in the first women's Royal Rumble match at the 2018 Royal Rumble. She entered at #23 and was eliminated by Asuka, the eventual winner. At , Moon lost the NXT Women's Championship to Baszler via technical submission, in her last NXT match.