Tracey swatted at Alice's hands when the woman had the audacity to pick her up by her collar. She kicked and fought against Alice, giving her a rather incredulous look. "I didn't realize they let the mentally ill in here to see the play. I've no idea what you're referring to, you batty old hag."
When Alice pushed them toward McGonagall, Tracey gave the professor a rather petulant look. "We merely conjured umbrellas after Peeves started throwing rubbish. See?" She started conjuring umbrellas until they piled up on the floor in front of her Transfiguration professor.
She tried not to look too smug as she risked a sideways glance at Pansy and Draco to back her up.