Princess in Training -- Meg Cabot
Mia is:
Being called an eco-terrorist by the world press and a baby-licker by her best friend Trying to keep Rocky, her new baby brother, safe from harm Running for student body president against Evil Incarnate, Lana Weinberger Trying to cope with her first B in English class Missing Michael, who's at college Terrified that college boys break up with girlfriends that won't Do It
All that, and yet... still not that good. Sure, there were funny bits--even a few I read out loud to Josh--but mostly I just wanted Mia to shut up and stop whining. It's a bad sign for the series that the book has only gone out twice since the beginning of May (counting me).