Wanda Derby, the 72-year-old Richland Hills woman charged with assaulting her gay neighbor, has died. Derby had a court hearing Monday, Jan. 14. Christopher McGregor, the Tarrant County assistant district attorney assigned to Derby’s case, said he received her death certificate late last week. He said she passed away Nov. 25, but it takes a while before they notify the courts. “Based on that, we have dismissed the assault cases against her,” he said.