I thought it sounded like that was the matter, Nellymay It has been like that for me too.
You know, its often down to conditioning, what they observe around them. Also children/young adults can be astonishingly 'black and white' about things, even down to "that birthday present was from DF, this one is from daisychain" even though from Day 1 I have tried so hard to instil values of " we are a family unit" and "it isnt DFs money and daisychain's money, your packet of biscuits, my chocolate cake, that isn't important, its for us all to share and enjoy".
Only the other day I was
when it was pointed out to me (by DSS) not to eat their cake when they werent there.... Um sorry but if you are being so precise, its my cake as I bought it for you in Tesco because I know you like it, and be bloody grateful I'm lovely enough to think about you even when you aren't with me! But of course I didn't say it like that
. But I didn't lose the opportunity to mention, now we don't think like that round here, do we? We share things together don't we? Yes, daisychain.
Its so difficult because of other influencing factors that we may never know or be able to control. Things like you describe have hurt me a lot (which is why, when I read your post, it did feel like a raw nerve had been hit
. Im sorry that your DSIL reinforces the "DSM is invisible", its a malaise many of us have talked about on this Board.
I think it is probably better for your own emotional well being to disengage from those sorts of thing you cant control and try to enjoy the life you have with your DH. Sometimes the more you try to do, the more they push back...