The Girls From Ames by Jeffrey Zaslow

I just finished this book based a  friendship between high school girls who managed to maintain a connection over decades despite geographical challenges, differences in religion, variable socio-economic situations, and different home life philosophies.
I did enjoy reading about how they maintained their connection.  Quite honestly though, while I was reading about their bonding during highschool, I couldn't shake the idea that they were a mean girls clique.  I wonder how a sequel "All the Other Girls from Ames" would read?