Okay, then. It's time to try actually talking to him -- though his hair's weird, she's still reasonably certain it's John.

"John--?" Her voice is hoarse. Goddammit, this is no time to fail her, voice! Her call is barely more than some sort of raspy whisper, and so she goes for option B. She flings herself down the hall, wrapping John in a hug from behind, burying her head in his shoulder.