She gave an expression of concern.  She did not like giving someone else's secrets, but he said she was ill in her mind.  Nat fought with it a few moments and nodded.  Pulling a letter from under her jacket, she showed it to him.  "I was asked to deliver this to town when I got there, sir.  I haven't read it or anything but it seemed very important to her."  She explained, with a tone that still showed that she disliked breaking a secret.