They had all lost so much during the war, some coping better than others. Harry himself had become an Auror right out of the gate, accepting any and all cases he could to help staunch Death Eater activity. Ron and Ginny had thrown themselves into Quidditch. Neville had become the kingpin of magical agriculture. Hell, even Luna had opened a crafts shop in Diagon Alley, facilitating art therapy classes. 