She stayed in the infirmary for at least an hour. When her son's eyes began to droop thanks to the potions Poppy Pomfrey was still insisting that he take, she kissed the top of his head again and took her leave. Even though he was still in the hospital ward, she felt less worried about him. Madam Pomfrey took excellent care of her when she was a child. There was no reason to believe that she wouldn't do the same for her son.