Oh crap, how could she not remember about mythology and legends in her classes when Loki told her about the existence of the nine realms and Yggdrasil? Maybe she wasn't paying to all of that at the time, but she retained some of the knowledge, though she wasn't sure if it is good enough.

"Um, yes, I think I once read about those legends for school," she confesses to him while scratching the back of her head, "So that means the Earth I live in is also a realm and a part of a large universe tree too?"