It was short-lived. Hermione had known it wouldn’t last long; to perform that particular spell you had to want it, and Draco had never wanted to harm anyone. In the past when she had made him torture others, the spell had never lasted longer than a second and the person looked more confused than anything. Since then, Hermione had made him use more muggle techniques against others, which in retrospect was much more traumatizing. And of course, there was always death.