He nodded. "Yeah... I think we did. There was never any guarantee that we'd be able to bring the baby with us through the nebula."
It had been a difficult decision, but Castle still felt that it was the best one. They could be happy here. As for timelines back home, those to him were lives that weren't lived, doors that weren't opened. Perhaps what was behind those doors would be better than the life they had chosen, or perhaps they wouldn't be. There really was no way to know.
"Ok. The envelope please." Castle began a drumroll on his thigh. "And the winner for sex of the Caskett baby is...."