Ottenbrite competed for Canada at the 1984 Summer Olympics in Los Angeles, California. She won a gold, silver, and a bronze medal for Canada. She won a gold medal in the 200 m breaststroke, a silver medal in the 100 m breaststroke, and a bronze medal in the 4 × 100 m medley relay with Reema Abdo, Michelle MacPherson, and Pamela Rai. She also won a gold and silver medal for Canada at the 1983 Pan American Games in the 100 m breaststroke and the 4 × 100 m medley.