After Nobuko's own encounter with the projection system firsthand, it was only a matter of time before the other half of the Yoshida sisters got to experience a projection as well. The idea of a machine manifesting a representation of one's inner mind felt absurd, practically sci-fi, but if her sister was to be believed, it was indeed a reality they were now facing as prisoners.
And so, when she overheard a nearby cellmate be taken away for said projection, Shiori felt compelled to follow, if only so she could bring back more information about the projection system and their fellow prisoners. Knowledge is power in a situation like this, after all.
As she enters the courtroom and witnesses the transformation of the space, only the slight raise of her eyebrows indicates any surprise she feels at the sight. And even then, she's more surprised by the sudden changing of the room than she is about the state of the gallery they've all found themselves in.
Speaking of those she's with, Shiori's gaze instinctually moves to Suzune as she speaks up. Indeed, Shiori hasn't had the chance to speak to her yet, at least not directly face to face, but she does remember having an encounter with the pink-haired man who's joined them. She turns in Suzune's direction, giving her a bow.

"A pleasure to make your acquaintance, ma'am. My name is Shiori Yoshida, at your service." It sounds like a phrase she's repeated hundreds of times, quite literally because she has. Standing back up straight, she raises a single eyebrow at Sylas' words. So he'd seen Suzune's projection, huh? Her eyes scan the room silently, expression as serious as ever.

"I do not see any sheep in the vicinity. I do not know why there would be any in this sort of location." But then again, the thorny brambles everywhere are unusual for a gallery to have anyway. Searching for normalcy, her gaze settles on the floral arrangements present in the gallery. The chauffeur does like a good flower arrangement.