Robin Chasing Hawk of Eagle Butte faces 10-years in prison and a $250,000 find when she's sentenced in March. The U.S. Attorney's office says she pleaded guilty to assault with a dangerous weapon yesterday. Prosecutors say Chasing Hawk and her sister got into an argument back in August while in a car. The sister got out, and started walking away when Chasing Hawk hit her with the car. The sister bad a broken neck, back and a fractured pelvis.