It might be an auditory illusion. This place can mess with a person's mind. [ She points at her ears with a rather calm expression, trying her best to keep a composed expression before shaking her head at the question. ]

No, I'm pretty sure it's not.

[ Hitching a breath, she takes several glances around. It's too dark to tell. ]

Let me see if I can't brighten the situation. [ That was a pretty bad pun, but it fits. She doesn't necessarily like being in this darkness either, which is why she reaches out for her cell phone and turns it on. At least that should be a reliable light source... ] Do you see anything?