Nerida was quick once she saw the spell rebound off of Laura she waited a minute before casting protego, hopefully she had already said finite that way her shield would work. When the jet hit her instead of her teeth growing it rebounded off of her. Yes she had timed it right. She cast Finite Incantatem, not knowing that it got rid of her protego and Laura's if she had one.

"Multicorfors!" She thought of blue and pointed it at Laura. Hehe she was going to be wearing blue clothes now! And just to mean to the girl that lost her, her hair she cast "Mucus ad Nauseam!"