RJ Hunt

I entered a left turn lane as I approached an intersection but then I changed my mind and decided I wanted to go straight through the intersection. So about 20 feet from the intersection I turned on my right blinker and safely moved into the lane on my right (crossing a solid white line) to go straight through the intersection. At the intersection a woman suddenly turned left in front of me and I hit the side (near the rear) of her car. She told the policeman that she did not yield to me because I had been in the left turn lane with my left turn blinker on. That's true, but then I turned on my right blinker and got back over. I guess the policeman did not believe my version because he did not give her a ticket. Who is at fault?