...One of the things Candace Pickens was going through in recent months, relatives said, was a volatile and abusive relationship — one she managed to keep hidden from some of the people who knew her best in and around Asheville, N.C., where she lived. Her boyfriend, Nathaniel Elijah Dixon, had a violent history that included attempted robbery and allegations of domestic violence against another woman with whom he had a child, according to the Citizen-Times. In addition to Dixon’s extensive criminal history, police think he has possible ties to a Los Angeles street gang. When Pickens recently discovered that she...