The Dowager Countess imparts another winner against her frenemy, Isobel, in the battle of the barbs , as quoted by pbs.org.
I haven't watched season 6 but I'm only interested in knowing in what this snarky comment means. I'm aware of 'moral high ground' but I don't understand in what sense cold has been used.
I debated posting this question on ELL but thought that someone who's more familiar with the context might be able to help me better.
Cold has various meanings so I don't know which sense would best connote what Violet meant.