So my neice is British/dual national with my sil's country, never lived in UK but loves our culture a lot and bigs up her British-ness at school apparently, which is in a third country.
Over on a recent UK visit, dn made a very British pudding but didn't try any of it as didn't like it (it was a crumble type pud) I said "Oh go on try a bit, I thought you aspired to be British!" This was met with gasps from my teen kids and I said "sorry I've been brought to book there".
My sil has raised it as a big issue and its been used as ammo for them to hate on us basically.
My dh is very unhappy, not sure what I can do? Apologise? Leave it? Back story is sil doesn't seem to like bils family and always seems really sad to be in UK. we do try (e.g lending them our car, lots of hosting, being 100% careful all the time not to offend) but we have never bonded.
Advice appreciated.