Twenty-four years ago, there was a girl who dribbled a basketball at the end of her dead-end street in Grass Valley. The pavement in the front yard holds memories of the countless hours she spent practicing with her father, becoming the player, the teammate, the champion and the accomplished individual Nevada Union graduate Kellie Cook is today. “Our neighbors got used to hearing the ball bounce on the street,” said Cook. “My dad coached me since I was seven years old and put in thousands of hours. I wouldn’t be surprised if the blacktop was a little bit lower near …