She wouldn't normally do this, as Yamato was generally both her equal and her superior. But while he's here, she get the rare opportunity to be more knowledgeable and skilled than him...and the experience that came with being older.

"We are. We're taken to this world to be pawns in a wager between Philemon and Nyarlathotep."

Which she's still miffed about, but the longer she stay in this city, the more dulled her annoyance grew. It's a waste of energy to stay annoyed, when she have other things to focus on.