Rarity was, for the closest version she could get to it right now, happy. While she had inititally questioned herself for hoping Nightmare actually intended to help any of them, it seemed the black alicorn had been true to her word. She'd returned Fluttershy and Applejack to her, and that alone gave Rarity hope enough that things could be okay. Yes the illusion they'd shared of being rescued had been shattered, but Rarity had accepted the sense behind Nightmare's words, as had the others. In fact, things seemed to be less pressured knowing that they weren't likely to be rescued any time soon, and they could put their thought's towards simple survival instead.