O'Neal debuted for Shine Wrestling as a babyface on May 24, 2013; competing against Ivelisse in a losing effort as Shine 10. At Shine 12 on August 23, Amber teamed with Santana Garrett in defeating Malia Hosaka and Brandi Wine, after a singles match between Santana and Wine ended in a no contest due to involvement by Hosaka. On September 28, at the "Shine 13", Amber and Santana, now known as The American Sweethearts faced The S-N-S Express (Jessie Belle Smothers and Sassy Stephie), but lost when Stephie pinned O'Neal after an "Kiss My Sass". A month later at Shine 14, the Sweethearts teamed with Leva Bates in a losing effort to the Express, which also included Nevaeh. At Shine 15 on December 13, the Sweethearts were once again defeated by the Express, and per the stipulation, Amber and Santana were forced to disband. In singles action, Amber suffered losses to La Rosa Negra and Tracy Taylor at Shine 16 and 18, respectively. At Shine 20 on June 27, 2014, Amber was defeated by Crazy Mary Dobson, who replaced Leah Von Dutch, via DQ. During the match, Amber turned into a villainess and attacked Dobson with a steel chair, which led to the DQ decision. After the match ended, the evil Amber gave the Bullet Club gesture to Dobson, similar to that of the wrestling stable which has her real-life husband, Doc Gallows, as a member.