Koishi was following you for quite awhile, not even trying to hide her presence. You can see her staring at you with somewhat curiosity, it's a bit uncomfortable. So you try to let her know, that you, in fact, know that she's here.

After some hesitation, Koishi comes closer, observing you, as if you are a pretty toy or something. She fixes her hat and tilts her head slightly.

Hmm..What brings you here to the Palace? We don't usually get visitors. Are you here to see my sister?