The hellhound makes a noise between a yelp and a snarl, rolling off; it hits the rear of the big truck with a CRUNCH, and leaves a dent in the metal.

Ava runs towards it. She can see the hound, of course-- she's not a mark, but she's not a normal either.

She aims to keep the thing between her and Trowa.

(The hound, presumably on its feet again, gives a warning growl.)