A little help?

I just read this Star Trek fic. It's great. Lovely. Stunning, even. I love it. The problem is... I don't get the last part. And as I'm generally not a total idiot, I would assume it's because the author is being overly cryptic, but she's got about a hundred comments already and a lot of them particularly praise the last bit. So unless there's some kind of Emperor's New Lack of Clothing thing going on here, I'm thinking it's something pretty obvious that I am for some reason totally clueless about.

Can anybody help?

Author: quigonejinn
Title: Young
Rating: G-PG
Length: 1074 words
Summary: A series of vignettes from Spock's life.

Young

Thanks!