Sister of Edward Murdstone who moves in with David and his mother after her marriage to Murdstone. David describes her as "a gloomy-looking lady she was; dark, like her brother, whom she greatly resembled in face and voice; and with very heavy eyebrows, nearly meeting over her large nose. She kept the purse in a very jail of a bag which hung upon her arm by a heavy chain, and shut up like a bite. I had never, at that time, seen such a metallic lady altogether as Miss Murdstone was". She surfaces again in the novel as the "confidential friend" of Dora Spenlow.