Castle: (about Alexis) I mean, she's gonna be gone in a few months. My little girl.
Beckett: Yeah, but she's growing up, Castle, and she's going to a great school. That's what you want, isn't it?
Castle: Yes, I'm just not ready.
Beckett: Okay, well, she is, so you two are just not on the same page.
Castle: So what do I do?
Beckett: Let her go. Trust me, if you hold on too tight, you'll just drive her away.