A letter does not have to be read to matter in a novel. It can sit beneath a cup, travel in a pocket, or remain on a hall table while people talk around it. In those moments, the interesting question is not yet what it says. It is what the possibility of reading makes people do.
Separate knowledge from expectation
Make two brief notes: what the reader knows about the letter, and what the character knows. Perhaps the reader recognises the sender while the character does not. Perhaps neither knows anything beyond the handwriting. Keep a prediction in a third line so it does not quietly become a fact about the story.
Follow the physical delay
Look for the action that postpones opening it. A visitor arrives; a character chooses another task; the envelope changes hands. These are different kinds of delay. An interruption comes from the scene, while a deliberate postponement can raise questions about the person making it. Neither automatically proves fear, guilt or deception.
Return after the envelope opens
Read the earlier passage again once the contents become available. Does a small action now look different? If the letter is never opened in the text, resist completing it yourself. The withheld information may remain part of your reading experience.
This exercise complements thinking about the reader inside a fictional letter, but concentrates on the object before its words are revealed. For a book-group note, quote only a short relevant phrase and describe one concrete delay. That gives other readers something precise to discuss without reducing the whole scene to a symbol.
