She did not care. Not only was she indifferent to it, her levels of not caring transcended the whole notion of indifference and burst forth into a brand new category of nope. It was as if some metaphysical manifestation of the platonic ideal of not caring had entered into her being so completely that it crowded out all other emotions. This was who she was now, in sum total and to its fullest extent

However, this was still a social situation, and she had to respond to it somehow. So she did:

“Why, do tell where you bought that sweater”