Why would it? So many things kept happening. She didn't have time to focus on herself, let alone take on her surroundings. Or any kind of books. Setsura wanted to re-read the books again when she found the time. Right now, she is busy with the cases, but maybe once all this mess is over. Books have always helped soothe her soul. There are many words that books can help her convey. The feelings she can't tell anybody, the words she wants to say. There are many books she can use as a substitute for her words. But now, she can't rely on books at this time, where the values are different.