Bellatrix watched her for a long moment in utter stillness. Then she nodded sharply. "You do that, child." She stepped back, turning away and sheathing her wand in one smooth move.
"We will meet again. Of that, I am quite certain." With that proclamation still ringing in the air, Bellatrix strolled casually away, pausing once to look back and blow the girl a kiss over her shoulder.