Прямо написано, что она съежилась. Значит, вряд ли она орала и ругалась в ответ, это разное поведение.

"...“Protego!”
Snape staggered; his wand flew upward, away from Harry — and suddenly Harry’s mind was teeming with memories that were not his — a hook-nosed man was shouting at a cowering woman, while a small dark-haired boy cried in a corner.... "