Not sure if I've put that quite right but will explain!
DM gave me a lovely gift for my DD last month. DD is 10 months old and DM's first grandchild. I don't want to go into too much detail in case it outs me but the gift was very special as both me and my brother had one when we were born and it is from my mum's country - so kind of a tradition in our family. My DP's brother and his wife have recently had a baby boy, and we are so happy for them. They have been through a lot including a very difficult pregnancy, and we're all excited about our children being so close in age and having a cousin to grow up with.
So my DM gave me the gift at a joint family meal and it is beautiful. SIL, as well as everyone else, said how lovely it is etc. DM said the other day as SIL seemed to like it so much she will get one for her little boy. Which is lovely of her, but I have to admit I'm really put out! DM has only met SIL a few times and hasn't met her little boy yet. I know she likes SIL but I can't get my head around why she would give the same gift to her DS as her own granddaughter? It feels like it's taken the shine off the gift a bit.
So AIBU for feeling this way? I haven't said anything to her as I can't think of a way to without it coming across as childish!