It's only after she's silent that Stiles realizes that Rachel was speaking in the first place. He glances up with an unintelligent "Huh?" and is expecting a glare or a roll of her eyes.
Instead, she's silent, mouth twisted and eyes wide. She looks like she's seen a ghost, but isn't sure yet whether that's a good or a bad thing. Stiles follows her line of sight to the television, where some woman with a fancy title and a name he doesn't catch is talking about something that Stiles really doesn't care about. Apparently Rachel finds it interesting, though.
"Do you know her?" He asks after a long moment, recognizing something like familiarity in her gaze. Rachel doesn't respond. He waits a while longer, listening to the woman talk along the lines of "We should all get along and this is an idea about how that should happen."
It's nothing he hasn't heard before, but he has to admit that it feels more sincere coming from her.
"Look at her." Rachel murmurs, as if in a trance. And so her does. He's not really sure what he's looking for, though. The woman is dark skinned and plump, with short hair. She's pretty enough, he supposes. She seems totally average, though. He wonders (with no small amount of alarm) if Rachel sees something that he can't.
He voices his concerns, and Rachel shakes her head. A small smile spreads over her features. It seems sad.
"Her outfit." the woman clarifies, and Stiles takes note of the pantsuit that the nameless speaker is sporting. Stiles still doesn't understand, and so he just waits for the clarification he is hoping will be forthcoming.
"She's actually wearing something fashionable!" His roommate exclaims, her face brightening and her eyes full of fathomless emotion. Stiles opts to stay silent, watching as the mirth slowly drains from Rachel's features. She watches the woman as she speaks at her little podium for a while longer before excusing herself. She closes her bedroom door, and Stiles has no doubt that she's locked it.
He stays where he is, watching the woman on the tv and trying to piece together the puzzle that might be her relationship to Rachel.
He doesn't come up with much.
As he watches longer, he can find the same sad eyes and a similar, nearly-flawless mask. But otherwise, he cannot find any similarities between Rachel and this mysterious Cassie Sosanya.
When he goes to check up on her a few hours later, he's surprised to find the door unlocked, the room empty, and the window wide open.