What are the major errors that Mrs. Sparsit makes in this book? Explain them, and explain how Dickens uses humor in these scenes.

After Bounderby marries Louisa, Mrs. Sparsit sees her master plan falling apart. She decides to destroy the marriage by contriving to catch Louisa in some kind of act of infidelity. At times Mrs. Sparsit is used for a little comic relief in an otherwise dark novel. Mrs. Sparsit pulling Mrs. Pegler, for example, makes for a little lightheartedness.