[Maybe those with the ability has sensed there's something else at play than just Kiseki's magic. Maybe some have put two and two together based on what people have reported. One or two people might just lack a sense of self-preservation. The point is, anyone venturing into the forest will find it just as snowed-over as the other islands, even if the trees do a good job of shutting out the wind.
Elsa herself has not ventured very far inside - not so far that an experienced warrior couldn't handle the level of monsters with little difficulty. How does a young woman with no combat experience deal with even low-level monsters? Well, it's possible to stumble upon one unfortunate monster that thought a lonely, scared girl would be easy prey... and met a stabby, icy death for that assumption.
She sits in just her dress, huddled up on her coat under what looks like something of a naturally-formed snow cave, and in her immediate area there is no wind at all. Eye of the storm. The Lost Inhibitions event has worn of a long time ago, not that it's much help. At least now she isn't crying.]