Even though Alice is bad at some social things others would consider fairly normal - like the concept of saying thank you, for one - there's a nod that seems to indicate those words, even if they're not said out loud.

"I suppose I should let you explore on your own now to see this train." Since that's the easiest way to learn about it, really. Easier than being told everything by someone else. "But.. I suppose if you end up having any questions, you will most likely find me in the kitchen drinking tea."

In other words: feel free to come there to ask her said questions.