The answer is referenced from the story THE YELLOW WALLPAPER
The contrasting relationship between the husband and the wife indicate that both have a polite relationship from an outside world but it isn’t a happy relationship if we get into the inner feelings of both.
In the story, narrator writes “tension makes her unreasonably angry with John sometimes". This is the feeling of wife when he says that her husband is caring and doesn’t believe that she is not well, and this being not so true creates some resistance in her mind at times
