Meerka - thank you so much. I am shaking reading your advice. I know that what you say is true. Thank you for holding my hand.
About the well-meaning thing. I don't think they are either well-intentioned or badly-intentioned. I think they are just raw, plain selfish. Do you see what I mean? It is not like there is any manipulation or intent there. It is just their way, every single time.
I realise - fully - that this makes them people who have a crucial piece missing. There is a yawning chasm where there should be empathy and consideration of others. However, it is hard to describe it as 'evil' because it is so blind.
(Don't worry, I am not excusing them. It would not actually strengthen my position on the subject to say that they were 'bad people'. I KNOW that what they are doing is unacceptable. And I am not willing to give them the get-out of cluelessness that they would get if this were reduced to a good/bad intentions. For YEARS this has been the excuse made for them: 'Oh, but they MEAN well'. DH says it. BIL says it. And I have reached a point where I say 'I don't actually CARE how they mean, because it's not really relevant. What is relevant is the fact that their behaviour is bullying. Whether they intend to be bullies is entirely beside the point.').
I find this very, very personally difficult because my own family is very dysfunctional and I don't have support. Something about the way they behave seems to trigger something very deep inside me and I can't cope at all. My reaction used to be just mildly anxious but it is now off-the-scale. When I am trapped in their house for four days over a weekend, I feel a sense of absolute and sheer panic. I feel that I can't push back, that I can't be seen or make myself heard, that I am simply stuck. I feel like I am suffocating. PIL insist that everything is done together, and that we are always doing something - so we have to run around the local stately homes all day every day (yes, they are lifelong National Trust members) and then eat out and it is literally 14 hours of their company straight without respite, day after day. Not only that, but the auditory space is taken up by their incessant (and I do mean incessant) verbalization while our movement through actual space constantly constrained by a constant level of fuss and mobility issues. There are times when I am on the verge of just taking off and sprinting as hard as I can because I just want to feel like ME again, to feel free.
I cannot actually remember anything about visits because I just blank it out (I have form for doing this with anything I find hard). DH says 'We visited this place' and I honest to God don't even remember ever having seen it. There are times when I am verging on hysterical, like some kind of repressed character in a nineteenth century novel. This isn't normal is it? What do I do to fix myself? Being more assertive has to be part of it.