Rodent — Lisa Lawrence

Just when Isabelle thinks her life can't get any worse, something happens to her at school that makes her wonder how she can continue to look after her younger siblings, Evan and Maisie, work at the local mini-mart and deal with her alcoholic mother. It's more than any sixteen-year-old should have to bear, but Isabelle can't think of a way out that won't hurt her brother and sister.
   
When Isabelle punches a girl at school, only one teacher sees past Isabelle's aggressive behavior. Challenged to participate in a group writing project, Isabelle tentatively connects with a boy named Will and discovers an interest in (and talent for) the only kind of drama she can control -- the kind that happens on the page.