The fact that different paranormal entities were gathered in the same place for an extended amount of time affected the surrounding air, turning it viscous. Making it hard for one to breathe.
The simultaneous presence of not only a ghost but two grim reapers as well as the queen of darkness was too much to bear that even Aiden was starting to get affected. This was because they were in the mortal realm; someplace that was beyond Nathalia's control.
But just as when the place was starting to feel heavy and unbearable, a phone started ringing. As if a saving grace, the ringtone pierced right to the bumble of the tension building up in the room and it broke through the deafening silence.
The sound goes off but after a second or two it started ringing again and the sound reverberated within the apartment. Everyone turned their heads in the direction where the sound was coming and all eyes fell on Aileen when they realized that it was hers.