Again, she could just as easily not see the other vehicle. Especially if she was distracting herself. The bike was probably in her blind spot. Cars can be there too.
Also when you are on a motorcycle and something like that is developing you have more options to evade than you do in a car.
My personal policy for riding in highway traffic is to remain in the left lane riding 10-12 m.p.h. faster than surrounding vehicles. This ensures problems don't "sneak up on you" from the rear. My highbeam is typically illuminated if there are a decent number of cars around.
By using these techniques one doesn't have to worry as much about dimwits yanking on their steering wheel in an attempt to exit the freeway at the last moment.
~ Blue Jays ~