Rick don't kill her Then we have to deal with a depressed Percy, and ain't nobody got time for that And the fandom would break if he did that too
Sally Jackson is one of the strongest people in these books. She held on, even when she didn't know if Percy would even come home. To me she technical has immortal soul. And think about it she has never gotten hurt ever only cryed over percy
Is Sally going to die? Having Sally and Paul killed would be enough to destroy Percy, which is what Gaea wants.
She will become immortal just the same way that Nero became immortal except that Sally Jackson is awesome and everybody loves her