GAME QUESTION??

I was playing a game online, similar to trivial persuit, and this question came up, its one of those that you know, but u cant remember no matter how hard you try.

here it is…
What famous book has this last line in it… “Full weight,” Deborah said.
if you could help me figure this stupid question out i would apriciate it.

I Never Promised You a Rose Garden by Hannah Green.