Ingress' eyes go wide at the sound, but she's grinning, not grimacing. She's not afraid of ghosts, particularly. She had one as a friend at Milliways once. Revenants, monsters, Velvets, spirits, and the like are a part of the background of the Underside.

She's afraid of the Night on the Bridge, but it's not here.

(She's also afraid of the creatures who killed her family, but she will never admit to that.)

"What's happening?" she whispers.