I agree, I think she'll show up in 7. The actress who plays her, Gal Gadot, was in Michelle Rodriguez 's on the set of 7 photo. So either she was visiting the set, which I kind of doubt, or she'll be in that movie.

As many people have brought up, you need to take into account the speed the vehicle was traveling. For example, Lamborghini's are very low cars, but if you were to jump out of a Lamborghini that's going 100 miles per hour, you'd be very badly hurt, or maybe even dead. Gisele's situation was a lot worse.

But, since this is the F&F franchise we're talking about, I guess there's a chance she survived and might be brought back. But I HIGHLY doubt it.