Fortunately, Allura has good reflexes. No sooner did she hear the 'D' in "don't" and her hand was retracted and she had somehow put an extra foot or two of space between herself and the imposter.

Unfortunately, she seems to have no intention of following instructions.

"Darin?" And then, more desperate: "Darin!!" She runs forward, into the darkness, as if she expects to find him somewhere in the abyss.