User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-6068707-20130708185831/@comment-6068707-20130708213607

Yes I know that but Sally was stuck in the underworld.

Now in the book it was said that Grover left and Sally stayed.

And in the movies he did bring grover back from the Underworkd. While I believe Hades just let her go in the Book.

Also they seem to have powers over life, due to the fact that they can bless people with immortality. What I'm asking is maybe Percy could do this,

I mean Hades doesn't really seem to care much about Nico, but maybe he'll help out just to be able to critize him every chance he gets in the future.