1) I didn't know that Amazing Race had started again this season (it hasn't).
2) There was no blood or broken bones visible, so the girl is probably fine. In fact, I immediately thought of my friend Amanda's Dad's saying that he busted out in times of injury: "Walk it off." ( for the record, my dad's saying is "One thing you know is that you never know.")
Chef said he was debating on showing me this video until he heard the girl who didn't get hit say "They don't call it the Amazing Race for nothing." That sealed the deal for him. Check it out: