SIL has told us she doesn't want to do Christmas presents this year, DC included, as she can't afford it. That's fine with us, our DC are young enough that they won't notice a present missing from her. But her DC are older and they will definitely notice, and I'm guessing she's not going to explain that she asked us not to buy them anything.
I think it's a bit cruel not to buy anything for her DC and still want to get them something, but DH thinks we should leave it alone as SIL has made it clear she wont be getting anything for ours and may be embarrassed.
WWYD?
YABU - Don't buy them anything as SIL has requested.
YANBU - They're only children, get them something anyway.