Patchouli had been awake for a while by that point, but she didn't like loud noises, so she may as well have been asleep. Ibuki would have heard the other woman's voice behind her, but not her footsteps.

Footsteps, or lack thereof because of her levitation abilities; she wouldn't hear them because there were none to be heard.

"Do you have to be so loud?" she asked of the stranger.