Well the title says it all. Miyako just went somewhere (bookshop or even a library) , and I plan that Takuma's the one asking her that (since he's one one the night class students capable of talking to her) and even Kaname, since he's fond of mocking her.
I even consider Isamu talking to her that way, especially when he's one of the workers in a certain book shop. xD yeah, he happened to be there.
Vampire Knight (c) Matsuri Hino
Miyako Yomi (c) me