I don't think that moaning on here anonymously is wrong. It's very different from talking about someone to people who know them.
I also don't think that expecting your sister to do things that will make her uncomfortable so that you aren't uncomfortable is reasonable. I think Oscar Wilde said that living life your own way isn't selfish - expecting others to do things your way is selfish, and he was right.
I do understand that the thought of being alone at Christmas could be upsetting, but as you are spending it with a friend, why the resentment against your sister?
Are late deals a thing of the past ?
Lack of Carer's courtesy while in your property
