It was just as she'd suspected; so taken by the birds, he miscalculated the speed and direction of the actual attack. Child's play in truth but the Professor had made them to understand that everyone was to leave the dueling arena in one piece. Doable, very doable.

Lex watched the boy fall to his knees--and yes, she'd be lying if she said it didn't amuse her but unfortunately, the amusement was of the small variety. The young woman quite missed the sound bones made when the full force of the spell took form. Frankie merely had the added weight and he handled it well enough. She nodded once as the boy freed himself the burden but that was all she did. Her wand was at the ready but she would wait on him before casting--not because she was taking it easy but because it was always important to know what your opponent was about before you dived head first.

Hazel eyes locked on the snake for a moment shortly after its appearance; angry little bugger wasn't he? However, he was not her target. Lex was certain she knew what would be coming next--a spell of course. The question was simply which one?

She didn't concern herself with the snake slipping ever closer. Until it was in decent proximity to do damage it was a non-factor. The glance down, however had her missing the raise of Frankie's wand and though she didn't see it coming, the young woman felt the hit and the subsequent movement of her tongue to the roof of her mouth.

He got one on her and she would let him have another; she knew she would the moment she heard him cast it. With the snake now set to lunge, the Auror allowed the Levicorpus to take her out of its striking range and into the air. The snake snapped at her but being this far from the ground, it received very little of her attention.

Lex cast a silent 'Fumos' but the true cover came with the silent disillusionment spell that she used to properly cloak her. Now it was time to make the Prefect dance. Alexa removed the langlock but kept the levicorpus as it provided a nice vantage point from which to do this:

"Bombarda!" Cast in the direction she'd last seen him, but just in cast, she sent another explosion just a little further ahead and a "Confringo!" in the opposite direction. The dark smoke came to life with brilliant colour as the explosions went off. He would have to take action and when he did, she would find him.