WHITE SPRINGS, Fla. (AP) — A 15-year-old girl who fatally shot her 16-year-old brother suffered years of abuse, including being locked in a room for weeks at a time with only a blanket and a bucket to use the bathroom, according to police reports and interviews.The shooting at a small white house off a dirt road in rural north Florida happened Monday while the children’s parents were away for work. The father, a truck driver, and his wife, who often goes with him, left the 16-year-old boy to watch over the 15-year-old, her 11-year-old sister and their 3-year-old sister, police said. The parents left Sunday and were due back Tuesday.Sometime Monday, the 15-year-old girl was locked in her room by her brother, police said.