Im an 11 year old girl and my moms parents are divorsed. because of that we have two christmases. one at my granfathers and one at my grandmas. Well a month ago we planed this saturday to be at my grandmas. But on monday my BFF invited me to her birthday party whitch would also be on the same saturday. Now this is like my Best friend ever in the world. I told my mom. On that I was invited monday she said I will have to make choices in life. And i can deicde for myself. Now today is tuesdat and she said that i cant go to the party family comes first. Its not fair because i should have the right to make my own choice. I keep begging her to let me go but she said no. Also this same friends threw a suprize party for me last year. So i really want to go to her party. Now that were in middleschool we havent see eachother alot.I am very mad. I really cant miss my BFF not to mention BFFL's party. what should i do????