"Yes, we’re...well-acquainted", Hermione struggled to find the words. But it was no secret, marked or unmarked by the man’s signature, all Death Eaters knew what Hermione was to Voldemort. That was the main reason for the lack of direct verbal slander from them. This didn’t clear up any of their confusion with his fascination or condoning of her blood status, though. Even Hermione herself wasn’t entirely sure.