Serious Accident - Innocent Party

My daughter was driving behind a car in front of which another car had broken down and switched on the hazard lights. At the last minute the car ahead of my daughter changed lanes and my daughter's car crashed into it. The car is a write off. She asked the woman why she didn't indicate that she was about to change lanes. The answer. "The sun was in my eyes so I didn't see the hazard lights." It's a cliché but the law is an ass. Because my daughter hit the back of the other car her insurance company told her she is automatically judged to be the guilty party. Needless to say she was in a state of shock but, thank God she was not hurt.