Georgette Heyer said this quote

I must own, too, that I can't be astonished at his being vexed to death over this business. It is excessively awkward! However, he doesn't lay the blame for that at my door: you mustn't think that!I should think not indeed! exclaimed Anthea between amusement and indignation. How could he possibly do so?No, very true, my love! agreed Mrs Darracott. I thought that myself, but it did put me on the fidgets when Richmond said he wanted to see me, because in general, you know, things I never even heard about turn out to be my fault.