The Captain was staying in the neighborhood.

He proposed to call on Mrs.Nevill Tyson.

Would she be at home on Wednesday afternoon?
Now, to Pinker's certain knowledge, Mrs.Nevill Tyson had taken the letters to the post herself that morning.

That meant secrecy, and secrecy meant mischief.
How was she going to get through the next two days?
This was provided for.

Baby was a bad sleeper.