At the end, it's revealed that she doesn't have a granddaughter. Something happened on her last quest beyond just losing one too many pieces of the set that broke her a la Miss Havisham in Great Expectations. Something to do with a girl, not necessarily a real granddaughter but somebody with traits she admired and hoped one day to see in her own offspring? Her husband indulges her delusions in a misguided attempt to care for her. But he's not without influence- as evidenced by the consequences of keeping the set instead of returning it. Conversely, if the party returns the set, maybe he can pull some strings as thanks for making Sophietta's foggy last days happy ones. If set is returned, permanent positive benefits for group re commerce, protection from law?