The singer has revealed she's been working on a full-length album, which she expects to be "bigger, better and more interesting, more surprising". On October 6, 2017, she released "Screenplay", featuring the Canadian duo The Darcys, as a promotional single to support the tour they held together in November. "September Fades", previously known as "Evergreen", was released on March 7, 2018, as the lead single from her debut album. The music video for the song was filmed on October 18, 2017 and released on March 7, 2018. It was directed by Gemma Warren and it is mainly inspired by the American TV series "Twin Peaks". On April 6, 2018, the singer was featured on the single "Target" by the British duo Hannie. Ralph released a second single titled "Girl Next Door", which features fellow Canadian rapper TOBi on May 2, 2018. A music video for the single, directed by Ally Pankiw, premiered on July 4, 2018. The third single, "Tables Have Turned", was released on July 18, 2018. Danielle Nemet shot and directed a music video for the song, which was later released on November 15, 2018. On August 22, the singer announced the release date of her debut studio album "A Good Girl", which was released on September 28, 2018. Along with the announcement, "Weather" was released as the fourth single from the album. The fifth and final single "Long Distance Lover" was released on October 2, 2018, alongside a music video directed by Ally Pankiw. On June 19, 2019, Ralph announced a new single titled "Gravity", which was released as the lead single for her second EP, "Flashbacks & Fantasies," on July 3. An animated music video for the song premiered on July 4. It was made by artist Amika Cooper and features drawings of Ralph in space. As of January 2020, "Gravity" became the singer's first song to reach the top 20 on Mediabase's Canada Top 40 chart peaking at number 20. To date, it has also peaked at number 23 on Nielsen's Canada CHR/Top 40 chart. On July 19, 2019, Australian singer Hopium released the single "Scorpio", which features Ralph. On August 1, the singer announced "No Muss No Fuss" as the second single, which was released on August 14, 2019, accompanied by a music video directed by Gemma Warren. From August 28 to September 19, Ralph served as an opening act for Carly Rae Jepsen during the Canadian concerts for The Dedicated Tour.