Sorry in advance for the lengthiness..... My parents were invited by my brother and his family to go out of state for a week this summer for one of their kid's sports tournaments. They have 3 children total and their daughter was born 6 weeks before ours, so of course they're little besties. HOWEVER, there is a long history of family drama and while it has really improved and us siblings are on good terms, there is strain between my parents and my brother's family.

SO, a few weeks ago my mom asks if her and my dad can take my daughter (7 y/o) on this trip. I told her I wasn't sure my brother and his wife would really appreciate that because only the grandparents (my SIL's parents, too) were invited. She says "Oh I'm not gonna ask them, we're just gonna tell them that she (my daughter) is coming". I replied with "Absolutely not. I don't feel that that is okay at all and I don't want any part of it". To which she replies "Ok fine, we'll ask them first". I told her my answer was still no because I felt like they should be spending this trip with my brother's kids. By the way, I feel like this is all compounded by the fact that my mom is closer, both location-wise and relationship-wise with my daughter, so she's almost using my kid as like a guaranteed buddy while they're there. So I politely requested that she not ask my brother and SIL if my daughter can come because I don't agree with it.

Fast forward to 2 days ago and my mom tells me she and my dad asked (come to find out, it was just my dad who asked but it was at my mom's behest) and they said it was absolutely fine to bring her. I am LIVID. Now she's asked me twice since, literally begging, for me to let my daughter go. AITA if I don't let her go? My daughter has no idea of the trip but I still feel like I'm making her miss out on a really great time with family/cousins and travel, if I say no. On the other hand, it makes me physically ill to reward my mom's complete disregard for my boundary.