Bucky doesn't know a lot about trolls except they're monster things or whatever that live under bridges, maybe, but it appears that the term has a different meaning to this girl. Something to do with the metahumans she talked about earlier? Wherever she comes from, it... well, suffice to say this situation is starting to feel more like it's straight out of some bizarre science fiction pulp.

Even so, he puts out his hand to rest on the girl's shoulder to help reassure her.

"Yeah, what about it?"

It doesn't make much sense to him that she'd think she's the future owner of this "troll lady's" coat, but he's trying to keep an open mind.