“Mum, get out!” Her own plea fell on deaf ears. There was absolutely no way he was leaving his mother here. Not only was it his mum, but he was an auror. She was technically a civilian, and there was absolutely no way that was happening.
Harry moved towards the wall with the cages behind it, away from the exit. The little girl, creature, was growing, darkening, and he had an awful sinking feeling right before he aimed a blasting hex at the thing. “Mum, go!”