Charlie did agree with Cat that there seemed to be a scarcity in apartment management, but she'd taken it as a favor of others keeping their noses out of her business. Up until now, she hadn't really had any complaints (a first, really) and had been perfectly content to just stay in her apartment unless she was required to be at a location for work. She did note that Cat seemed about to add further suggestions, but instead became somewhat panicked.
Charlie, likewise, glanced about as though something had happened but she saw nor heard anything - except for a slight droning noise, not dissimilar to the hum of a room full of electrical equipment. Thinking nothing of it, instead she concentrated on Cat's observation regarding her and Rylee, feeling her mouth set in a hard line.
"Yeah, coincidences," she started, pulling up all thoughts she had on that particular regard, when the humming suddenly grew sharper. Charlie grimaced, teeth bared as a hand protectively rose to her ear level. The noise drowned out Cat's next words, and Charlie was shit at reading lips, so her only response was a confused look. "What?" She couldn't even hear her own voice, her distress level quickly rising due to her sudden and inexplicable handicap.