Dorothy (The Screaming Ceiling)
From Tardis Wiki, the free Doctor Who reference
Dorothy was the housekeeper for John Campbell. She chastised Thomas Carnacki for appearing unannounced. She was elderly and was the only servant in the household. She was the person who had been in the castle the longest so might know what was going on. She was a shape-changer and that Castle Kraighten was a living being.[statement unclear] She didn't see Carnacki as a threat. (AUDIO: The Screaming Ceiling)