She's a bit surprised to hear the question, mainly because she's never really had to explain it to anyone before. People just sort of knew. She gazes around the room, exploring her thoughts trying to find an actual way to describe it.

"I used to hate him actually," she laughs a bit, reflecting on so many years past. "Hate is a strong word, I guess, but he was a pain in the ass and did pretty much nothing right, but ... he changed me. He changed everyone. With his recklessness and idiocy, he made everything better—brighter."

Her face softens, a slight smile appearing as her mind wanders. "He's the chief of our village now. Years ago, I would have been so angry that it wasn't me, but now I ... I just want to support him. I don't really know what else to say about it, other than the fact that I'm gonna stick by him no matter what, no matter what crazy messes we get in to together—because I know that if Hiccup's involved, it will turn into a mess—but I'll be there. He ... he has my heart."

She doesn't voice it often, and even with five years of closeness and kisses, speaking it has a rare blush spark on her face.