C.A.
My husband's family is the same way. The give more attention to my neice cause she was the first born. I do not think that is right. They should all be treated equal. When my SIL was pregnant they paid for everything. They bought them a beautiful crib and dresser, a beautiful wood changing table, paid for her baby shower, and bought their travel stroller. When we were having our daughter all they bought use was a thermometer and a few outfits. My husband was so hurt that they did not help us. MY parents did everything for us. We were given a crib and a friend was with a charity that gave us 37 boxes of diapers. Which helped out alot. My BIL has a great job and can afford to buy these things himself, where we cannot. So it hurt. What really got to me is we had alot of the diapers left over and were saving them for when we have our second ( which is the end of this month). When my SIL became pregnant with her son my FIL had the gall to tell me to give the diapers to them so that THEY can save money. I ended up lying to him and told him that we got rid of them cause they didn't stick anymore. Why should I give them to my in laws? I get so tired of everything being about my husbands brother. What about us?
So if I were you I would have the conversation with them. Don't let your daughter loose out on her grandparents cause they are stubborn. Best of Luck!