Change narration: I said to her “I will have written letters”

Explanation: When converting a direct speech sentence into indirect (reported) speech, tense modifications must occur if the primary reporting verb is in the past tense ('said to her' becomes 'told her').

### Important Facts & Rules:

• Direct Speech: I said to her, "I will have written letters."
  


• Rule 1: 'said to' changes to 'told' when followed by an object.
  


• Rule 2: The conjunction 'that' replaces quotation marks.
  


• Rule 3 (Tense Shift): The future perfect tense modal auxiliary 'will have' shifts into the past future perfect 'would have'.
  

Indirect Form: I told her that I would have written letters.*