I loved this. Usually I don't love Kate POV's because she's so damned impenetrable, but I like this voice you found for her, still conflicted and still feeling loss.

Jack does that to her. Challenges her, breaks her, hurts her, makes her cry, but he always reminds her what it’s like to feel something. That’s why she started loving him. And, much like the crying, once she started she forgot how to stop.

This is them. Perfect.