What an horrible Accident. I hope she (and the others involved) recover well, dreadful.
Macau is a dangerous track but perhaps these F3 cars are also exceptionally vulnerable. Baku and the likes could also (although way wider) potentially see such accidents but with even higher F1 speeds, but just maybe these F3 cars are more susceptible to sending each other flying then F1 cars. Or maybe simply the fact that there are much more of them on track, often tangling with 3 4 at a time is the cause of this.