Here’s a success story. Just Asking: Anacostia High valedictorian on going from a homeless shelter to Georgetown Rashema Melson, 18, will graduate on June 11. She lives with her mother and two brothers in one room at the D.C. General homeless shelter. [William Tell’s note: This is the same facility that housed Relisha Rudd.] Her father was killed when she was 7 months old. What will you talk about at graduation? I’m going to talk about how Anacostia pushed me. People feel