It was my DS's 2nd birthday last week. We had a party with friends and close family. We asked my SIL a little while ago and as usual she said nothing. I had a feeling where this was going but gave her the benefit of the doubt.
2 weeks before the party, DH helped her move, we didn't mention the party. The week before DH bumped into her in town and he asked her if she was coming. He got a vague "dunno yet". He sent a text a couple of days before and we heard nothing. We spoke to MIL on the morning of the party and she asked if we had heard from SIL, DH said no. SIL had told MIL she was busy. Not even a text to us or a FB message. Nothing. A week later we haven't heard and not even a card for our DS. Apprently she told DH before that she did have a voucher for DS (I think this was when DH helped her move).
I know DS is only 2 and he doesn't know any different, but we do. I said to DH that he should text her and say "you could of let us know". He says he doesn't want to waste the credit and he wouldn't be that polite. Good IMHO. She didn't even acknowledge DS (or me) at xmas when we saw her for an hour before she left family party to go shopping. She lives in the same city as us, but she can't even be bothered to stick a card in the post or send a text. I know I probably am being a bit U, but it pisses me off.