Interview transcript here. A slice of her comments:
I think one major impetus for my change was the fact that, despite being in default liberal environments all of my life, I nevertheless always adored the works of the Western literary tradition. And when I saw the 1980s’ multiculturalism taking over university campuses, and ignorant students who had never read the works of the Western canon feeling empowered to reject those works on the basis of the gonads and melanin of their authors, that to me was appalling.
Ironically, people I don’t think understand this distinction, in the 1970s, which was the height of this very abstruse literary theory known as deconstruction, that you mentioned, and that I was an uncritical acolyte of. However odd the theories of language were, holding that meaning is impossible, that the human self is just a fiction, a trope of language, we read the canon without ever once thinking to say, if I’m a female, “Oh, gee, I can’t read Milton because he’s a dead white male.” It never came up. So, I fortunately had a strong grounding in greatness, in beauty, in eloquence, in sublimity. And when that came under attack, that started to turn me away from the broader trends that were going on in academia.