Write an unsent letter to someone who has died

Help me write an unsent letter to someone who has died.

Who: [name, relationship]
What I wish I'd said: [messy]
Memories to include: [list]
Tone: [loving / honest / mixed]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. A full letter.
2. A shorter version.
3. Prompts for anything still unsaid.
4. Reminder: if grief feels overwhelming, Cruse 0808 808 1677 or Samaritans 116 123; call 999 if in immediate danger.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, quotes or what the other person thinks. This is help with wording, not counselling. UK English.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.