In 2015, Rocque and her new team (her old team having aged out) of Danielle Schmiemann, Holly Jamieson and Jesse Iles would compete for and win her second Alberta Junior Curling Championship, earning her and her team a berth at the 2015 Canadian Junior Curling Championships in Corner Brook where she defended her title with her new team by going 9–1 in the round robin giving her a birth to the final, where they won against Ontario's Chelsea Brandwood 8–2. She joined Cathy King, Suzanne Birt, and Kaitlyn Lawes as the fourth junior woman skip to win back-to-back Canadian Junior Curling Championships titles. Rocque would cap the season off by going undefeated to win the 2015 World Junior Curling Championships, becoming the first Canadian skip to win back to back women's world junior championships.