Quinceanera Yes or No (Latinos Only)?

Ok so my grandma told my mom she was Cuban since she was little but today we found out she wasn't. My mom has been planing my Quinceanera since I was 9 I'm 14 now. She still wants to do it. I'm Native American and African American. Should I still have my Quinces or not. I want to do it but I don't want people of that culture to be mad or think I'm a bad person because I'm doing this. My mom is heart broken because she's gotten so much done and she thinks its done vein. Should I still do it or not?