She owned three horses ridden by Anne Kursinksi that would go on to be renowned champions, winning medals at the Olympic and Pan American Games.
There, she initiated the Grand Prix of Flintridge, which was one of the first FEI World Cup Qualifiers to be held in the western United States.
[12][13] Steinwedell was a long time supporter of the United States Equestrian Team's Gold Medal Club, an initiative to advance American showjumping on the international stage.
She was particularly notable for her syndicate ownership of three world class mounts for Olympian Anne Kursinski, Eros, Livius and Starman.
[11] Livius and Kursinski would also travel as the reserve horse and rider pair to the 1984 Summer Olympics, and win the 1983 Grand Prix of Rome.
[14][15] Starman would place fourth individually in show jumping at the 1988 Summer Olympics in Seoul, and win a team silver medal.
[17] Eros and Kursinksi would compete at the 1996 Summer Olympic Games where they were a part of the silver medal-winning United States show jumping team.