Esther 4:8, Question 3. Why does Mordechai tell Hasach to both show and tell the document to Esther?

The Malbim writes, using the answer from the last post, that Mordechai here is showing the copy of the letter, and relating his interpretation of it. He adds that Mordechai could only get the summary version, not what the governors had. He had no other option than to mention the destruction left out of the actual public letter.