You probably mean to say that your car accident was the result of your being over the dividing yellow line and there was a collision of each vehicle's side view mirror, not rear view mirror. You're probably responsible for the entire accident since it would be difficult to say that your striking her vehicle (for which you were 100% at fault) was the reason for this woman losing control of her vehicle. It's not her responsibility to be a fantastic driver and recover after you caused your vehicle to strike her vehicle. You'll need a better reason to say that she contributed to the damages and should bear liability. I don't see that happening.
