To Malfoy’s left, his wife made an odd, stiff nod, her eyes averted from Volde-
mort and the snake. To his right, his son, Draco, who had been gazing up at the
inert body overhead, glanced quickly at Voldemort and away again, terrified to
make eye contact.
“My Lord,” said a dark woman halfway down the table, her voice constricted
with emotion, “it is an honor to have you here, in our family’s house. There can
be no higher pleasure.”

She sat beside her sister, as unlike her in looks, with her dark hair and
heavily lidded eyes, as she was in bearing and demeanor; where Narcissa sat
rigid and impassive, Bellatrix leaned toward Voldemort, for mere words could
not demonstrate her longer for closeness.
“No higher pleasure,” repeated Voldemort, his head tilted a little to one side
as he considered Bellatrix. “That means a great deal, Bellatrix, from you,”

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В доме нашей семьи (а не родовом поместье, лол), и подчеркивается, что Беллатриса - сестра Нарциссы