My question involves a traffic accident in the State of Georgia:

I was in the turning lane and was proceeding to get over to the lane on the right. We were at a traffic light and the light turned green. There was an open space which allowed me to get in the other lane. As I proceeded to change lanes, the car behind me speeds up and strikes my back right quarter panel. The back corner of my vehicle is damaged and she had minor damage on her front left bumper(not her side). Who would be at fault? The officer issued both of us tickets because he could not determine fault(me, improper lane change and her, following too closely).