More to the point would be WHY on earth her books would show up on any list of must read books.
Neither her style nor her ideology/politics warrant much attention beyond maybe something for a high school debating team project. (Hence look who she is popular with.)
Take those two books by her off and add:
Against The Day - Thomas Pynchon
Infinite Jest - David Foster Wallace
And then take off something else and add
The Overstory by Ricahrd Powers.
You're welcome. :-)