Thanks to her vampire job, Lydia is the quietest of them; no sound while she walks and she's been practicing hard. Kenshin and Olivier were good teachers, and Yuffie helped her too on occasion.

Moving right up behind Olivier, pressed flat to the wall and crouching by the door. Nodding to Tazrenda to take the lead, as Lydia'd be right behind her in scouting around the room.