Welshwife You make a very important point regarding why do the other children give in regarding going to her house in my humble opinion.
I can answer this in terms of my own family: The very difficult, bullying, daughter takes over and in her domineering way always gets what she wants. She will do this by the most extreme behaviour, bullying, threatening, forcing the others into submission. Unless you have encountered the lengths these people will go to, it is hard to believe what they will do. When we were moving house, she refused to pack anything. On the day the removal men were there, she unpacked the boxes in her room, got in bed, and refused to do anything. Yet she said she liked the new house more. It was better for her in fact. She was 16. Now, as an adult in her 30s, she always gets her own way with all of us no matter what it is. Her older 2 sisters don't even try to disagree any more. It just isn't worth WW3 erupting. Once I was supposed to go to her for Christmas, having been given very precise instructions on how long I could stay. I am disabled, in constant pain requiring morphine daily and have various medical conditions and get very bad migraines. Cometh the day before travel and I had flu - real flu, couldn't turn over in bed, let alone walk to the loo. Managed to phone explaining. WW3 threatened. Day of journey I am worse - told I must have Doctor's letter proving how ill I am!!!! I can't remember a lot about that day. Told I must travel on C'mas day - next day then, and return the following day. This a 4-5 hour drive I would need to make plus taking my dogs to kennels on C'mas day.., and me very ill. I could not do it, impossible. WW3 erupts, she has everyone, both my other daughters and their husbands and even older GC thinking Granny could not be bothered to see them for C"mas! I was at home, shivering in pain without food, only just managing by now to crawl to the loo, on my own, alone...
The Personality Disorder these people seem to have is called Narcissistic Personality Disorder. To them, life is all about them. They demand attention and they feed off it. They set up arguments and rows and they manipulate everyone. They use the famous "Gaslighting" mentioned earlier to drive a person crazy, they set one person against another, they make people on the outside (e.g. work colleagues, people they only see a short time) think they are wonderful. Often they are pillars of the community - outside the home. Indoors it's a different matter, everything and everybody are their 6possessions^, there to enhance their status. They have no empathy. They will go to any lengths to get their own way. Theories about childhood and parenting style are given for the reason for the condition. These are theories and research has discounted them. My difficult child was difficult from day one. At day two on leaving the hospital a nurse said "I'm glad that one's going, it has done nothing but scream all the time." She did scream all the time unless I breast fed her or later carried her around with me. She screamed so piercingly that I was scared neighbours would phone the Police, so I gave in.... Now we are still giving in.