She has written two letters to Mr.Michael Vanstone.
To the first letter no answer came.

To the second a reply was received.
Her infernal cleverness put an obstacle I had not expected in the way of my intercepting it.

Later in the day, after she had herself opened and read the answer, I laid another trap for her.

It just succeeded, and no more.

I had half a minute to look into the envelope in her absence.