[1] Some of her training was performed with the Central Jersey Aquatic Club under Coach Bill Palmer.

On September 8, Heddy was part of the silver medal-winning 4 × 100 m freestyle relay team.

On July 22, she won the gold medal in the 200 m medley with a championship record time, 2:19.80, defeating the East German swimmers, Ulrike Tauber and Angela Franke.

The American team had taken the world record from the east Germans the previous year and swam 1.25 seconds below that mark in the final, but still lost to the east Germans who took back the world record and won the gold.

[5] Heddy also participated at the 1976 Summer Olympics in Montreal, Quebec, where she finished fifth in the 400-metre freestyle on July 20.