Steve has seen a lot of strange things in his time as a tribute, but someone reappearing in reality is probably one of the strangest for him. The way it made his head ache and his already damaged eyes fuzz out even more, it was disorienting, but then suddenly she was there. As if she has always been there but memory tells him otherwise, especially with them being in an empty field, it's not like she walked out from behind a tree.

When she calls out to him, he tenses more, unsure what she wants or her intentions, it's not that he doesn't recognize her once he focuses his eyes, but it's that he barely knows her. He remembers her voice, dancing with her briefly, sharing some light banter, but then it was over. That was that. And even as he looks at her, something looking off about her, he couldn't say what was wrong or if he was even right about it. In the end, he just doesn't know this woman.

Still, seeing her use her powers, come out looking pretty pleased with herself sets off a warning bell in his mind. He's seen what powers do in this arena so far, he's seen people get themselves hurt, seen people get other's hurt. The Cornucopia had been a mess.

"You should be careful, using abilities" there's concern for her safety in his voice, but also wary of becoming a casualty of her using her abilities.