you say it's your birthday

I finished Estrella's Quinceanera in a couple of days (and a couple of months ago)but am barely writing about it now. I liked the book as I read it but I can't say that it was the best book I've ever read or anything like that. It is about a girl of Mexican descent, Estrella and her family. Estrella is a smart girl who gets a scholarship to go to an upscale prep school so that changes the dynamics between herself and her family and old friends. Then Estrella is facing her 15th birthday which is celebrated in a big way in the Mexican culture with a rite of passage known as a "quinceanera" and Estrella doesn't want one.

It is the typical dilemma of a Mexican girl trying to fit into a "white" world without losing her Mexican side. Why does every book about Mexican girls have to deal with that (i.e. The Tequila Worm). Why can't there be a book with a strong Mexican girl that faces other issues besides that? Suggestions, thoughts, please. :)