Bucky was no superhuman, but he was army trained, and kept in shape. He was able to keep up with her. All the while he really wondered what she was doing. Daredevil? Stunt double? It was hard to say. Maybe she was just an adrenaline junkie or something of the sort. At any rate, it was intriguing enough to him to follow her and find out.
Stepping into the alley that he'd seen her head into, he looked around, trying to see where she went. He didn't see her initially and scratched his head a bit. Maybe he had the wrong alley? Or did she just disappear after turning down the alley? No, she couldn't have disappeared, people didn't disappear into thin air like that. At least not in his experience, but he wasn't fully aware of the state of Orange County. Sure, he knew about Valarnet and people discussing dreams and things, but he hadn't had any of these dreams himself. So for now, his mind didn't jump to her being a superhero or something.
Looking a little confused, he glanced back toward the street, wondering if he did have the wrong alley.