We are not seeing MIL Christmas Day, although we are going to visit over the holidays. Last time she visited us she brought a couple of bags of presents for DS (5) and DD (18 months). I double checked she wouldn't rather keep them so she could see them open them, but she wanted to have them on the day. So far, so good.
Anyway, I looked through the bags and only 3 were named (2 for DS and 1 for DD) so we put them aside to deal with later. DH and I have now opened them to look, and they ALL appear to be for DS - nothing big, clothes and a couple of stocking filler type wooden toys. I was a bit surprised, but DH says DD won't really notice as she's so small. He thinks it might be because both he and his mum were only children and so she doesn't get it. But I think it is a bit odd - how could you sit there wrapping up a pile of 10 or so presents for your grandchildren, of which only one is for one of them, and not realise? And I've not seen an signs of favouritism before, if anything I'd say she favours DD.
So AIBU to think this is a bit odd? I can't say anything to her, DH thinks she'd get upset.