So you'll have to forgive her, Hiccup, but where she comes from? She kills dragons. A not insignificant number, either. And this one, while still only the size of a dragonling, is still not small.

So of course she startles, initially, reaching for a staff she no longer carries and gripping nothing but air. In that space of time, however, she realizes that it's not attacking. And Hiccup doesn't seem all that concerned, either.

Her eyes dart between them. Her mouth opens and then shuts again. Alright. New experiences not all limited to being 'in the future'.