Miss Clarissa is one of Mr. Spenlow's sisters. She and her sister, Lavinia, act as a guardian for Dora after Mr. Spenlow's death. She is more severe in temperament than Lavinia, and frequently hints that she disapproved of her brother's wife (largely because she never invited the Spenlow sisters to dinner). Clarissa does, however, agree to allow David to visit Dora.