"You have ALL been hit with an amnesia spell... a gas... and before that a gas that turned everybody female."
It was a concise explanation, and she nodded her approval. A factual, accurate summary, delivered without surrendering to emotions. Casting her eye around, she took in the three girls huddling together.
Their slumped shoulders, and little girl lost looks screamed out that they were formerly boys. Not strong women, embracing their feminine power, and grace. She threw her shoulders back, proudly displaying her curves. Not some timid Ravenclaw, or insignificant Hufflepuff, she was a Slytherin, and not about to dismiss any weapon in her armoury. Let the boys be distracted, let the girls be envious, she was a woman with a purpose. A woman on a mission, she would restore the house's honour, and punish those who had assaulted HER house.
She might have been affected by the amnesia, but she was mistress of her own destiny. The amnesia did unsettle her, but as a proud Slytherin, she would not succumb to such weakness.
With purpose, she named herself, Calista. If she was starting anew, she would choose a name that suited her.
As Professor Snape appeared, his long cape swirling imperiously behind him. Calista knew it was time to leave, He would undoubtedly want to question everybody, and instruct everyone that HE would be righting this wrong.
So she left, so that she didn't have to disobey her head of house.
Besides, it was clear.
This had all the hallmarks of some pathetic Gryffindor prank, and that meant the ginger shame of all true wizarding families, the Weasley brothers.
As the other girls milled around, and starting heading towards the Professor, she headed off out of the passage and away.
Once around the corner, she allowed her true nature to surface, and let a swishing strut become her stride. Putting a little bounce and sway, always drew a boy's eyes, and made them more willing to submit... more willing to answer her questions.