It matters to show that it was hard sometimes but that there was overwhelming joy at the same time,” Alexandra Reeve said during the Q&A following the Sundance screening, as the Deseret News previously reported.

The film could not have been made without the contributions of Reeve’s family, so it’s noteworthy when Reeve’s son Matthew opens up to the camera in the above, exclusive clip to discuss his favorite moment in his dad’s remarkable film career.