Kristine made her debut as the lead vocalist for Iron Core Banned on July 20, 2024, at Artie’s Bar & Grill in Frenchtown, New Jersey. The performance was met with enthusiasm, marking a successful introduction of Rommel's dynamic presence to the band's fans. Her addition to the group was officially announced in June 2024, signaling a new chapter for the hard rock and metal band from the New Jersey-Pennsylvania border.