"You'd have a tough time getting rid of me, even if you wanted to." Sirius raised their joined hands and brushed his lips against Remus' knuckles, keeping his other arm securely around Remus' waist. He then continued to steer him closer to the prone form of his mother, not even bothering to try and step around the blood.
After nearly a dozen kicks, Walburga opened her remaining eye, which went as wide as a saucer. And it stayed that way, even after she saw that it was the boy and not the wolf. And it remained that way as he offered his warning. Until Sirius wondered if the bitch could even blink anymore.
"'Regina' is Regulus, by the way. That's what we all call him at Hogwarts, because he's a big girl. The Slytherins even call him Regina." He gazed down at her coldly. "You better show that you have heard and that you understand...he really wants to do Regina. Not in the way he does me, of course, but certainly in the way he did you." He grinned. "So...you get to live a nice, long remainder of your hag life, Mrs. Black. And this is a great mental image I'll take with me for the rest of time."
Walburga had no control over her vocal cords, if she even remembered that she had them. Her eye remained wide, and the dark center flicked toward Lupin. She nodded hastily, her head bobbing and then falling to the side, looking away from them, toward the back of the cell.