Did the woman in her car just sit there after she saw the two men helping, or did she actually witness the fall and continue to just wait in her car? Maybe it caught her off-guard and took a moment to register what had happened? I’d hope it were the latter, because I’d hate to think of someone being that selfish and unwilling to help.
That said, I’m glad there were good samaritans around, and I hope the elderly woman is OK! What an unnerving situation.