Janni Smith in the movie

I read in an interview that Barbra Piotrowski AKA Janni Smith, the woman whose true story this was based on, had a small acting role in the film. I haven't been able to find anywhere that says where in the film she has her extras role. I assume it's very small and most likely not a speaking role. I'd guess it's most likely in the marathon scene as she would be in a wheel chair but she could've had on the walking equipment. Does anyone know? I'm curious. Thank you.