He does not even know or understand his true purpose of keeping around a blood so tainted. Perhaps he simply wanted to dangle her in front of her mother, prove to Chernobyl that she is of mind weak, that she cannot even keep her own offspring around. His wanted Chernobyl to suffer long and drawn off, mentally knowing that her children hated her for her abandonment. It was a most pleasing thought to the brute, a brute known for savage brutality, but as he ages, he tends to enjoy a bit of twisted mentality.
He does not know what she has been doing in her time away, and right now he hardly cares. He had to lure her in, bring her back to Iromar where her life force can be used, molded for the purposes that he desires. She was born there, and she belongs there. After this sunset hunt, he is sure to speak with her on what she had been doing, what she plans to do with her time going forward.
The elk's back leg is in his jaws now. His sunset eyes are keen on the target, half expecting a kick or a headbutt to come his way. The girl had kept up well enough. In fact, she goes in straight for the kill. No joking around. No nonsense. Business. The business of killing, taking life without hesitation. It is a trait admirable in its own. There is nothing wrong with having a little fun with your food, but sometimes things just need to get done.
As Avery goes for the through, the demon beast makes a sudden jerk backwards with her clamped jaws. He can feel the muscles of the elk fighting to escape his mouth, and he can almost feel his teeth wanting to get pulled out. He keeps his bite tight, then opens slightly so he moves upwards onto the delicate tendon. He bites, grinding his teeth so they break the flesh and tendon, ripping it to shred and rendering the beast's leg useless.
The girl had been biting at the neck, keeping its attention and weakening it bite after bite. The leg is done for, and he uses his weight to make sure it is knocked off of its feet. In that moment, he jumps forth, jaw agape as he launches for the back of the neck. His weight fall upon the elk, teeth sinking into the thick, hard flesh and lock onto the spinal cord at the base of the head. He feels the creature trash in an attempt to fling him off, and it does succeed in throwing him off a little, but he re-positions and keeps his hold. There is little head movement to be had without causing even more damage, and he reduced the potential attack of the elk upon the girl as it struggles in the mossy, sunset world. He snarls fiercely, commanding her to take the kill, to end the life and make the elk bleed. He would work on severing the spine with his great jaws, his muscles built around his head for maximum strength in bite. They would have their head, fresh and ripe, and watch the meat rot off the skull for weeks to come.