The girl with the hard hat had nothing to write, so she drew a small dot on the paper. To those who are not the girl with the hard hat, that dot is a punctuation mark, signifying a pause. On the letter the girl was writing, it was a dot. She was done writing.

She gave the letter to the lady at the post office. The addition of the hard hat girl's letter to the already substantial amount of letters the post office lady had received that day was not monumental. The girl had written the letter to someone very special, and now it was the post office lady's responsibility. The hard hat girl left without second thoughts.

Letters can convey any emotion depending on the writer. This particular letter conveyed no emotion.