Dreaming of your father-in-law, especially if he looks happy, may mean that family and friend ties are in great shape and theyll continue that way. On the contrary, if hes angry in the dream, it means the opposite. Dreaming that your mother-in-law is happy indicates that everythings going great at home, theres harmony. But if shes angry, then it may mean that the dreamer is doing something improper. When a woman dreams of herself arguing with her mother-in-law, whos angry, this indicates that there are family problems or friendships that must be avoided.