I think it's ridiculous to assume that when inviting a large group of people to celebrate your OWN birthday, that you have to choose said place based on meeting the needs of the group, not yourself. It's your own birthday, not a generic dinner party.
To clarify, it wasn't that she was complaining about the situation, it was that she was saying it was disrespectful for the SIL to choose a place that didn't consider her needs. On the SIL's birthday.
And scratch upbringing comment - all I was getting at was that I've read that this "so and so 'disrespected' me" issue is common with pwBPD.
Of course her opinions and comments in this situation are ridiculous, but it seemed you do understand that she truly believes what she is complaining about and moreover you understand that there's baggage she's packing along that causes her to act the way she does.
We didn't end up going, but that's honestly not the point here. (She was feeling bad before and after this comment was made and encouraged me to go too, but I wasn't feeling so hot either.) Generally the situation wasn't bad overall, necessarily... . although it was only because I think that I stopped the paranoid "disrespect" meme from escalating into full fledged anger and foolishness by not engaging in that conversation. The point of my original post was just to ask about this issue of paranoia about being "disrespected" by everyone at every turn.
My point is about the choice you made in going/not going. Its a revealing and crucial choice in which theres a potential for changing up the game here. You cut yourself out of a family event due to dysregulation on the part of your W. I used to do that too. It eventually eats you up.
I agree with you that the situation wasn't "all that bad overall" - but probably for slightly different reasons. Your W was merely sharing her (ridiculous) opinion about how inconsiderate your SIL was. You chose to not "engage in that conversation" when perhaps you could have just validated her concerns and still gone to the dinner - with or without your W. It is indeed not such a bad thing to hear your W out - and acknowledge/validate what's she's saying.
My main point is that it's all about choices and change that you need to start considering - and not so much about trying to figure out if the spouses of other members are as paranoid as your W. It's a safe bet they are. Mine certainly is - she won't attend ANY of my family events anymore.
But I do - and she still dysregulates just about every time.