Long rant sorry.

Okay so my boyfriends mom will take my boyfriends sisters son once a week, has gone and seen his sisters new baby many times but my daughter who is almost 1 has seen her a handful of times.. yesterday she said would take her so they could spend time but canceled last minute.. am I wrong to be annoyed? I feel like my daughter is getting the short end of the stick.. meanwhile my boyfriends mom will post pictures of my daughter claiming to be such a great grandmother but only gets those pictures from MY account. Should it bother me as much as it does? Like I don’t dislike his mother at all, I just don’t think my daughter is getting the same “grandchild” treatment. That is all. Am I wrong?