Gertrude Moon (Millicent Martin) is Daphne's mother. The two have a difficult and complex relationship, and Daphne appears to dislike her mother immensely whilst still remaining intensely loyal and subservient to her. Domineering and ever-complaining, Gertrude is doting and always forgiving towards her son Simon's selfish behavior but is hyper-critical of her ever-supportive and long-suffering daughter, frequently guilting Daphne into providing what she wants. When Gertrude leaves her husband she goes to Seattle. There she unsuccessfully tries to start a romance with Martin and briefly lives with Niles and Daphne, where she quickly overstays her welcome.