Unfucking believable!!! How is this even possible? People are getting sued for saving other people's lives. (reminds me of the incredibles)
The story you posted was light on facts. After searching around the web, I don't understand your outrage.
She didn't save her life. There was no reason to believe that the car was going explode, and according to witnesses at the scene, there was no outward evidence, such as smoke, to indicate such a danger. Additionally, the defendant left the plaintiff by the side of the car. This is inconsistent with the defendant's reasoning for why she dragged her out of the car. If you think the car is going to explode, you don't leave the victim right next to the car.
A reasonable person doesn't drag someone out of a car after they've been in a serious car collision. Such careless conduct can obviously aggravate a person's injuries. That's why emergency worker's are so careful when they attempt to remove a victim from a car wreck.
Obviously there are policy reasons for shielding a would-be-rescuer from lawsuits. Nevertheless, that doesn't mean that anyone who acts in a rescue situation (or what they perceive to be as a rescue situation) should be allowed to act negligently.
The biggest problem for the plaintiff is proving cause.