dobbs.j.r.bob said: Ah, her "i'm gonna eat you Nadeko if you get any closer to my Koyomi" look.
Not really, I'd say that's her inquiring / investigating look, cuz she also looked like this when Koyomi has a conversation with Oshino about Hanekawa.
What you're referring to maybe when she has this look while she also "bare her fang".
Alas, so much pain to guess a meaning from a mute / expresionless character which is worser than nagato yuki..
