Handle a difficult family member without losing the rest of the family

Help me handle a difficult family member.

Who and the pattern: [facts]
Next event: [when, where, who else]
What I want: [survive the day, limit topics, leave early]
Allies in the family: [any]
Kids present: [yes/no]

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

Then:
1. A simple plan for the event (arrival, seating, exit).
2. Topic-change and exit lines.
3. What to agree with an ally beforehand.
4. A boundary message if I need to skip or shorten next time.
5. When family patterns need Relate or other support, not just tactics.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, diagnoses or legal outcomes. This is help with wording and planning, not legal, medical or counselling advice; point me to GOV.UK, Citizens Advice, NSPCC (0808 800 5000), Childline (0800 1111), Samaritans (116 123) or Refuge/National Domestic Abuse Helpline (0808 2000 247) where that fits, and call 999 if anyone is in immediate danger. UK English.

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