It's my niece's birthday today and we were invited for cake but she's also having a party tomorrow, with friends & she's invited one cousin ( my brother's daughter) AIBU to feel that she should not only have included my daughter but the other cousins too? It might be an age thing where she only wants kids similar age there, but the activity is suitable for all ages . I just think differently to her & it's not the first time she's done this. Should family come before friends? If my daughter knew about it I'm sure she'd feel upset.