It was dc1's (age 6) birthday a few weeks ago, she received nothing from MIL, card, present telephone call etc.
It was elder dc's (age 9) birthday last week and sure enough she received a card in the post (she is MIL favourite).
The same thing happened last year.
I threw the card away and told dh nothing had arrived. I suppose she'll have some explaining to do.
I think I may have been a bit U in going about this the wrong way.
I just don't want dc1 to find out/overhear and wonder why she was left out.