YA Dystopia Recommendations?

So my best friend is a high school English teacher. She’s also getting her master’s, and she’s writing a paper this semester on heroines in YA dystopian lit, which she’s thinking about eventually expanding into her thesis.

Does anyone have any recommendations for:

a) books she should read? I’ve already lent her Hunger Games & Chasing Fire, the Uglies series, Skinned, The Adoration of Jenna Fox, and The Forest of Hands & Teeth. What else? Books that aren’t coming out until later this year or even 2010 are okay too.

b) critical essays on YA dystopian lit, online or elsewhere? I’ve lent her Mind-Rain about the Uglies series.

Thanks so much!