"I know," she said automatically, that line forming between her eyebrows again as they drew together. "But here's the thing, this isn't just about me. It's about us."
And that was maybe the most important point of it all. Castle was essentially waiting on her to be ready, meanwhile he was nearly a decade older than her. In everything else between the two of them, age didn't matter and it wasn't even a subject that they broached most of the time, but what if she waited another five years? She would be 41, Castle would be 51 and that meant that when any child was 18, he would be pushing 70 and Kate would be closing in on 60.
Even with the medical advancements that came with being in the future, getting older was something that couldn't be prevented. She wanted to be able to keep up with her kids, and for Castle to do all the things with them that he had done with Alexis.
"If it were up to you, if you had to decide right now, what would you want to do? Leaving me out of it completely."