Question

Why did the mr. Nuttle come to visit the family? The story was open window

Answer 1

$\huge\mathtt\red{Answer}$

✍️Framton Nuttel is not visiting Mrs. Sappleton exclusively. That might be considered inappropriate.

✍️ He is calling upon Mr. and Mrs. Sappleton, but the men are all out hunting. Only Mrs. Sappleton and her niece Vera happen to be at home when Framton calls.

✍️There were no telephones in those days, and there was a lot of time spent calling on people who were not at home.

✍️Framton must have planned to arrive at right around tea time, but he was evidently a little early. 

Answer 2

Answer:

So Nuttle visits Mrs. Sappleton because she is one of the people that his sister has said that he should visit. He should visit her to prevent his mental issue from recurring and/or getting worse.