Anduin frowns slightly as he watches Wrathion begin to shiver, before shaking his head.

"Please," he says, motioning him on. "Be careful. I'll keep watch from here, but we can't be certain how far she will go to try and stop you."

He casts a wary glance around the water, looking for the woman himself, but he cannot see her himself. The river is too murky to see clearly through from this angle, and he feels it's best he keep his distance. They don't both need to wind up in that water, somehow.