Cassandra has seemed preoccupied with something from the moment she walked in the house, particularly so for such a low-key affair. Not that she isn't always preoccupied- if she's not working on something, she's not herself. But now, in particular, there's clearly something on her mind as she picks at her food.

When Rex steps outside, she pays attention. There's a number of things she really needs to talk to him about, one in particular, and it'd be better without everyone else around. After waiting a minute to see if he'll come back in, she goes out herself.

"Rex? I need to ask you something."