The Shi Family's 'Tigress' (Harry Potter)

She has a sharper tongue than the professor, and is more arrogant than Potter and Sirius Black combined. Dumbledore gets a headache, a toothache, and aches all over whenever he sees her; Professor McGonagall either takes a detour or turns around and walks away when she spots her from afar; The Marauders suck in their guts, stick out their chests, and cover their little birds when they see her; The Sorting Hat says: She's braver than the bravest Gryffindor, but not as impulsive; more cunning than the most cunning Slytherin, but without Slytherin's ambition; she studies harder than any Ravenclaw, but lacks Ravenclaw's perseverance. But her most precious quality is loyalty, though she's loyal only to her own heart and demands absolute loyalty from others. Please add this to your collection.