Harry didn't speak. He didn't believe Mary, didn't believe her at all, but the woman who stepped into his house was her. That was Anna, not having aged the slightest in all the years since he'd last seen her, although her skin was slightly darker than he remembered, and her dress completely unpatched. The woman almost looked... human. And as she approached, he merely stared, not knowing what to say or how to act or whether or not to banish her from his house and his life. He managed, as the apparition moved towards him, to move his gaze to Mary, but she looked like a frightened Rabbit and was hardly about to be much use.
"Mother." He eventually settled on, swallowing to wet his dry throat, but didn't manage to say any more than that, having been completely prepared never to see his mother again in this mortal realm.