I recently saw the transcript of her rather embarassing answer to a question about what she read to stay informed about national/international events. It sounded similar to what happened with Perry when he was asked about the 3 departments he would eliminate. If that was a true reflection of her self informing methodology, she may not have had enough content to sustain her FOX gig.
I assume you are talking about the couric interview. Listen to her response sometime, she was obviously ticked, probably about being condescended to by the likes of couric, who reportedly harassed her about abortion repeatedly. You can tell she was frustrated and being flippant with her. Listen to courics tone. I have a book about sarah written before 2008 that talks about her being a reader, even when she was young, reading the paper front to back.