Against a wolf pack, showing any weakness was not going to work. A wolf pack wouldn't think as deeply as a human would — in their eyes, the weaker the prey, the easier it would be for them to release their aggression upon it. In contrast, against a stronger opponent, a wolf pack would be much more cautious, and wouldn't just pounce recklessly.
Sure enough, the full blast of Ling Lan's malevolent aura made the alpha wolf pause — after all, Ling Lan was someone who had killed the King of the Swamp before and had been baptised in the blood of the various kingly beasts. This malevolent aura caused the wolves to become wary, and the wolves who had been bounding at her from all directions stopped at the lead wolf's howling cries. Still, they remained poised to attack, just waiting for the alpha wolf's signal.