JJ is sitting in one of the plush tan leather seats alone. Emily notices her solitude and decides to walk over, take a breath before bringing the other woman and herself a coffee. This is her chance to smooth things over. When they arrive back at Quantico, it'll be morning and they'll probably have another case queued up to go, they could use the caffeine.
Emily places the cup on the table and gently slides it toward JJ. JJ peers up at Emily and silently accepts the gift, taking a sip. Emily takes this as an opportunity to sit in the seat across from JJ. She notices that JJ is staring out the windows into the dark sky
Emily: What are you thinking right now?
JJ snaps out of her trance-like state and looks over at Emily. JJ was slightly bothered to be forced out of her head, but she was glad that Emily was talking to her. Something felt weird about their interactions this case, but she couldn't figure out why
JJ: Katie
JJ looked down at her nails, perfectly manicured. She never understood why Prentiss could get stress relief from near-destroying her own nails, but wished she too could have such a simple form of release for her worries. Emily was thoroughly perplexed. Katie?
Emily: Katie, as in second victim Katie? Wh-
JJ interrupts Emily
JJ: That girl- she's dead now. [pause] Her parents were dead for years already. That's a whole family tree just- [JJ gestures] wiped out. Kaput. Like they never existed. And, and I keep thinking, how easily could my family- Will and myself and Henry-
Emily interrupts JJ
Emily: Jayje-
JJ interrupts Emily, knowing her worries were incredibly irrational
JJ: I know, I know.
Emily looks sadly at JJ and the screen fades black on her face. The scene ends