During the 2024–25 season, Heiden averaged 5.0 points and 2.6 rebounds in 28 games.[1] During the second round of the 2025 Big Ten tournament against Michigan State, she came off the bench and scored all of her then career-high 11 points in the final 12:44 of the game. The game was tied when she entered, and Iowa won 74–61.[3] During the first round of the 2025 NCAA Division I women's basketball tournament against Murray State, she scored a then career-high 15 points, and seven rebounds in 17 minutes.[4] She became the fifth Hawkeye freshman since 2009 to score 15 or more points in an NCAA tournament game.[1]
She was named a starter for the 2025–26 season in her sophomore year.[5] During the season opening game against Southern on November 3, 2025, she scored a career-high 21 points and 14 rebounds, for her first career double-double.[6] On November 20, 2025, during the WBCA Showcase against Baylor, she scored 18 points and 11 rebounds for her third double-double of the season. On November 22, 2025, against Miami (FL), she scored 20 points on 9-for-11 shooting with six rebounds, two steals and a block, to win the WBCA Showcase Championship. She was subsequently named the Big Ten Player of the Week, and USBWA National Player of the Week.[7][8] On January 22, 2026, against Maryland, she scored game-high 20 points and eight rebounds. On January 25, 2026, against Ohio State, she scored 18 points, eight rebounds, and a career-high four steals. She was subsequently named the Big Ten Player of the Week for the second time this season.[9]