As Lupin struggled to restraint Black, Mayumi casually strolled in front of Ron, plucked the flailing rat out from his hands, then began force feeding some kind of liquid from a vail.
"Now, now, none of you kills this scum." The girl hums as Scabbers— or maybe Peter Pittigrew, fell over asleep in her hand, "Now, if the plot went like it was Snape should be here right now but I blew his office up so-" She shoved the rat in the two men's face, "Turn him back then let's be done with it."