Are These Her Clothes?

Erica's clothes were found the next day in a parking lot associated with her youth nature house. Her parents reported her missing, but they didn't give any substantial evidence that she had been murdered. A worker at the park decided to send Erica's family a letter using magazine clippings and it said: "Cold cough, throat, rest, death" The police knew all three of these girls are related so they suspected one person was behind their deaths.