Dean and Emma were very careful to make sure that word didn't go out among the other members of the resistance. For the most part, they were successful - and they likely would have been completely successful if they weren't the only ones changed by five years of constantly struggling to survive. Chihiro could have never survived if she remained the meek and demure person she entered Wonderland as so long ago. She had to become something much more. Purging her mind and body of weakness by any means necessary, with no small amount of contribution from Dean himself, Chihiro became one of the resistance's most formidable warriors. She became someone who'd do anything it took to restore Wonderland to the place it once was. And, most importantly (at least at this moment), she became the kind of person who wouldn't just leave Dean to his own devices and trust him to make the right decisions on his own.

She didn't know exactly what he was planning, or what Emma had to do with it - and her not knowing meant that it had to be something reckless. No matter how strong she became, she could never quite shake the image of the person she once was, the person that wouldn't let Dean rush off into danger alone - of course they wouldn't tell her.

But before she's able to confront him, she finds herself in the mansion - unbroken, whole again, even decorated for Christmas - and it isn't long before she finds Dean stalking the hallways, looking suspicious.

"What did you do?"