On the other hand, Mrs. Cavendish believed that the slip of paper to which her mother-in-law clung so tenaciously was a written proof of her own husband's infidelity. 
Mrs. Cavendish's husband was cheating on her with three different women.
mnli hypothesis: Mrs. Cavendish's husband was cheating on her with three different women. premise: On the other hand, Mrs. Cavendish believed that the slip of paper to which her mother-in-law clung so tenaciously was a written proof of her own husband's infidelity. 